PDF malware analysis — malicious · bb06f2062a3f6ff5

MALICIOUS

PDF

72.0 KB Created: 2021-09-07 16:36:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11

MD5: 794b3eab013574bddd5d26de1ac5d707 SHA-1: c84d4b546435725f741c6e36486fca97a3ddeddf SHA-256: bb06f2062a3f6ff5bff79be43b94753698b145a19acc18aefcf18b2190ece02d

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It contains numerous links pointing to compromised WordPress installations and disposable hosting, suggesting a phishing or malware distribution campaign. The presence of these links indicates an attempt to redirect the user to malicious external sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9902

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 http://www.airportlimofortlauderdale.net/wp-content/plugins/formcraft/file-upload/server/content/files/16099cddd384b6---21733732417.pdf In PDF document text
- https://daulte.com/ckfinder/userfiles/files/47647736249.pdfIn PDF document text
- https://www.toptalentusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f8272367a8f---kixagorovugovalemabo.pdfIn PDF document text
- https://tisuputih.com/contents/files/radezujiwiredolifopodiker.pdfIn PDF document text
- http://mpu-beratung-brendle.de/userfiles/file/47261265656.pdfIn PDF document text
- http://www.hj-bouwt.be/wp-content/plugins/formcraft/file-upload/server/content/files/160e8e1e46a850---bamavuje.pdfIn PDF document text
- https://zoldlepes.hu/userfiles/file/8521511638.pdfIn PDF document text
- http://vitrine-prof.com/files/mafevafaden.pdfIn PDF document text
- https://oknoplus-omsk.ru/wp-content/plugins/super-forms/uploads/php/files/a3d98b5263dc9dda9317b6b168204e1c/ranegoza.pdfIn PDF document text
- http://polimak.pl/userfiles/file/17345252257.pdfIn PDF document text
- http://clinicaveterinariagussago.com/userfiles/files/73338398064.pdfIn PDF document text
- http://netisiletisim.com/guvennet/resimlerfiles/diwopoxedotomalobutasadu.pdfIn PDF document text
- https://www.beewellrx.com/wp-content/plugins/super-forms/uploads/php/files/tmp/97633672845.pdfIn PDF document text
- http://pc580.cn/upload_fck/file/2021-8-5/20210805050139324819.pdfIn PDF document text
- http://lifemartrealestateconnect.com/wp-content/plugins/super-forms/uploads/php/files/876d7vr0tk03ofptnu6c0j83b5/dusejefejitidifeso.pdfIn PDF document text
- https://hostessima.pl/userfiles/file/butosudadija.pdfIn PDF document text
- http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076579d314d0---99709350436.pdfIn PDF document text
- https://travelone.ae/userfiles/files/42378370430.pdfIn PDF document text
- https://gradeagroup.com/wp-content/plugins/super-forms/uploads/php/files/hggups1ckvjeqd3c8fbmv400lp/kuzabuterelagepupugesel.pdfIn PDF document text
- http://finsura-lifedirect.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1608ea19d5b5a3---jikurutokefaludad.pdfIn PDF document text
- https://travelselection.us/wp-content/plugins/formcraft/file-upload/server/content/files/1606e5fec798bf---52809464864.pdfIn PDF document text
- http://hainescentreasia.com/images/file/54444317141.pdfIn PDF document text
- https://mithermomix.com.mx/wp-content/plugins/super-forms/uploads/php/files/bfb451027631aad2c5a3a9f5177fbc40/49707962935.pdfIn PDF document text
- https://stakeoutllc.com/wp-content/plugins/super-forms/uploads/php/files/9805c6a863650047db0c5aaaa637732c/99905112227.pdfIn PDF document text
- http://cityhelps.org/clients/6/61/61afa7a028a8e04f14432b0fece6f2b0/File/9800346503.pdfIn PDF document text
- http://vhktn.at/images/content/files/bovosiwa.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=straight+to+advanced+answers+pdfPDF 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_off0000b80c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB80C	11080 bytes
SHA-256: `a4c836aef134c80e9af77463aaad48f0f85554fa431361ca947d29e009a5965f`
`font_01_sfnt_off0000d1a9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD1A9	15960 bytes
SHA-256: `65ef20099432264ee18d5f430927d27024ae015ce8421fb249067be39f7fbe1a`
`font_02_sfnt_off0000f9fc.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF9FC	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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