PDF malware analysis — malicious · ac051d25f087ec90

MALICIOUS

PDF

84.4 KB Created: 2021-09-07 08:59:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23

MD5: d0c2f18dd9e095dffcd68d2175f6d7ee SHA-1: dd61bbea6aa89eebee5e62127b47c147b304515e SHA-256: ac051d25f087ec906a7983959a27bde10e4e3ecbf4867193cc9bbd0909c7c015

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. The document contains numerous links, many pointing to compromised WordPress upload directories, suggesting it functions as a link farm. These links likely lead to phishing sites or further malware downloads, aligning with a spearphishing attachment attack pattern. No scripts were extracted, but the presence of external URIs and the link farm structure strongly indicate malicious intent.

Machine Learning

Nyx PDF Classifier malicious score 0.9974

Heuristics 6

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

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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.
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 https://2greenchicks.com/wp-content/plugins/super-forms/uploads/php/files/19dc877a2938174a3c5191ab50ede49e/fotetipijosebebuxupewum.pdf In PDF document text
- http://sotel-perm.ru/site/file/sarukaxarejisune.pdfIn PDF document text
- http://jamoncup.es/wp-content/plugins/formcraft/file-upload/server/content/files/16076b2b753dfb---22189527678.pdfIn PDF document text
- https://www.ideakliniksisli.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609aea25aec90---19026823039.pdfIn PDF document text
- https://alteanetworks.fr/img/file/95407756504.pdfIn PDF document text
- http://www.argentum.com/wp-content/plugins/super-forms/uploads/php/files/69lg8bcs4q0t3507jp2sal677g/42684379041.pdfIn PDF document text
- https://zionapostolicministries.org/uploads/file/bekikifew.pdfIn PDF document text
- http://www.commandinglife.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bb96ac1841d---renomadabaxuv.pdfIn PDF document text
- https://deniz-sogutma.org/img/userfiles/file/novoboniwi.pdfIn PDF document text
- http://homespakistan.net/magzine/uploadfiles/file/zinojaf.pdfIn PDF document text
- http://caacoding.net/wp-content/plugins/formcraft/file-upload/server/content/files/1611c51f7e28eb---pirotipaliwoxabozipofevoz.pdfIn PDF document text
- https://kuechentreff-schmid.de/wp-content/plugins/super-forms/uploads/php/files/3h4s5tf5rnph7sk4a7ucipe709/mikokozotugufozudikepa.pdfIn PDF document text
- http://fsgpj.com/upfolder/e/files/20210907110006.pdfIn PDF document text
- https://sharkovinkom.com/sharkovinkom.com/ckfinder/userfiles/files/27996682611.pdfIn PDF document text
- http://aias.pnu.ac.th/ckfinder/userfiles/files/37193888827.pdfIn PDF document text
- https://spencershaulageltd.co.uk/wp-content/plugins/super-forms/uploads/php/files/c7530e322d43d43ff5b9f55b606fc450/wuxewugomeninib.pdfIn PDF document text
- http://dogoducthien.com/uploads/files/46068373002.pdfIn PDF document text
- http://ar-intl.net/wp-content/plugins/super-forms/uploads/php/files/0csh0oqe7sb1rqpq0i40ebeam4/65820307621.pdfIn PDF document text
- https://globalazeri.az/wp-content/plugins/super-forms/uploads/php/files/jhkqnt4sva3b60qjjscl3929f7/15669841850.pdfIn PDF document text
- http://yossy.biz/userfiles/file/xamibisuriladamaranut.pdfIn PDF document text
- https://bdata.vn/upload/files/16436591493.pdfIn PDF document text
- https://angelsstaff.com/uploads/file/nixinibosawom.pdfIn PDF document text
- http://dailygiasi.com/uploads/userfiles/file/birelalivenewolinogofibob.pdfIn PDF document text
- https://naucharts.com/ckfinder/userfiles/files/88462872215.pdfIn PDF document text
- http://stopasbestos.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1609643c90703a---firux.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=statistics+for+dummies+pdf+downloadPDF link annotation
- 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_off0000dff4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDFF4	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000f80b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF80B	11040 bytes
SHA-256: `7b127b9f1fd84e3d9e51ed88a90d9df9f87048f756a29ca167172ed6c34f4a30`
`font_02_sfnt_off000111c7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x111C7	19996 bytes
SHA-256: `9f6259ac3b5b3b85785b2721842f0d9802d2dfe090c7412b05a7f74e471306cc`

Open this report in the interactive analyzer, or submit your own file for analysis.