PDF malware analysis — malicious · 801ded36e3aa1122

MALICIOUS

PDF

89.1 KB Created: 2021-07-01 14:34:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20

MD5: db0f23e6bb54a9ea773f833d00d14ef4 SHA-1: a7261a98b05b721e28adcd81c68d596f09506810 SHA-256: 801ded36e3aa1122128dd17bb144ccdaa7e8bbd1f035099b609df3a57cbd6dcc

184 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains numerous links pointing to compromised WordPress sites, often within upload directories, suggesting a link farm designed to host and distribute malicious files. The presence of a 'download button' heuristic and the ClamAV detection as 'Pdf.Phishing.Trojan' strongly indicate a phishing or malware distribution attempt. The ML classifier also flagged this PDF with high confidence.

Machine Learning

Nyx PDF Classifier malicious score 0.9947

Heuristics 8

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL

PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM

PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM

Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON

Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
External URI info PDF_URI

PDF contains an external URL action
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL http://sad-azov.ru/wp-content/plugins/super-forms/uploads/php/files/bad171ddc9f37620c098cf058e167480/94583644942.pdf In PDF document text
- https://www.chortho.co.uk/wp-content/plugins/super-forms/uploads/php/files/e41t55sc64uejveo17jttbbu7b/xalofituxidu.pdfIn PDF document text
- http://nuyewrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/c54071b0b85001ca97fce1bb986f84bb/xabitegenewowukakitutovu.pdfIn PDF document text
- http://www.phonefixcomo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16088c36978d4f---kizazibebuvanironego.pdfIn PDF document text
- http://metzpaintings.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f89b6cb198---juxakuxudabibanaf.pdfIn PDF document text
- https://mercedesmazo.es/wp-content/plugins/formcraft/file-upload/server/content/files/160a137d269c9a---pomexawezedexodef.pdfIn PDF document text
- https://hylyt.co/wp-content/plugins/super-forms/uploads/php/files/d727f12260a3e576cf46c0f167eee016/vukezotidivapidu.pdfIn PDF document text
- https://csom.cz/wp-content/plugins/super-forms/uploads/php/files/8fb41b57533217da9f8fe1e0dad2da8a/rupozis.pdfIn PDF document text
- https://ontime-taxi.kg/wp-content/plugins/super-forms/uploads/php/files/9142af4085e71a66e90ada1040ae89aa/zibewev.pdfIn PDF document text
- http://bahattinburyan.com/userfiles/file/43888234292.pdfIn PDF document text
- https://lightupalife.org.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160a648de681c8---30267589917.pdfIn PDF document text
- https://www.ferienhof-schneider.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607b27801bca1---70498724549.pdfIn PDF document text
- https://drahmetbostanci.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d5be8d7e96---674896048.pdfIn PDF document text
- http://przychodnia-felinskiego.pl/uploads/editor/file/lafonaw.pdfIn PDF document text
- https://www.onestopnaturalstore.ca/wp-content/plugins/super-forms/uploads/php/files/c6ehqu262296ae3u2oem7bthu6/24865293161.pdfIn PDF document text
- http://sad-azov.ru/wp-content/plugins/super-forms/uploads/php/files/f3ec295c75850f530b44fd1af45b28e4/tafadexunakituner.pdfIn PDF document text
- http://79.170.40.182/boothtastic.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083dffcb7e57---55397838180.pdfPDF link annotation
- https://topplene.com/upload/ckfinder_temp/files/20210623215659.pdfIn PDF document text
- http://melissajacksonmd.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b14cfeb19ee---sivim.pdfIn PDF document text
- https://avenirpourtous.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16082edd7df457---93638584347.pdfIn PDF document text
- https://www.frankreich-ferien.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1606d023f65a22---naguvolovojewiwizuw.pdfIn PDF document text
- http://www.heksan.com.pl/file/xizepalugedotova.pdfIn PDF document text
- https://carthink.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608c1d2eb212f---foradopatoxezaxolulufe.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=new+full+movie+download+tamilPDF link annotation
- http://s292376414.onlinehome.fr/datas/imgmail/file/tagasevizumemimu.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000facb.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFACB	16988 bytes
SHA-256: `67870c5f86c152146f382ba865906703816c50006209b21754dac678b3b4d68b`
`font_01_sfnt_off00012713.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12713	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off00013f2a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x13F2A	10476 bytes
SHA-256: `871e9faf3ac33ad547317a5f80084c4e87d01ba9441aa866c4cbda9937b90e5d`

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