PDF malware analysis — malicious · 0e2b6fccaac10d2b

MALICIOUS

PDF

65.0 KB Created: 2021-02-20 09:41:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18

MD5: dfec2bd8b42e067011ef693d2878f4ea SHA-1: 418625d43a4a7ce104d66cec99f05873e4a54136 SHA-256: 0e2b6fccaac10d2b938387e13f199ac423ae4f979a9cfcb35f40a680439ab754

186 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document is identified as malicious by multiple heuristics and a machine learning classifier, and is also detected by ClamAV as a phishing trojan. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or phishing operation. The document body, though heavily obfuscated, appears to be a lure related to search terms, directing users to external URLs.

Machine Learning

Nyx PDF Classifier malicious score 0.9993

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
Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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://baarspo.ru/strik?utm_term=calories+in+dunkin+donuts+small+caramel+swirl+iced+coffee PDF link annotation
- https://kofijowuz.weebly.com/uploads/1/3/4/4/134446653/2764228.pdfIn PDF document text
- https://nonexivibofopuv.weebly.com/uploads/1/3/4/6/134603010/sekitipaped.pdfIn PDF document text
- https://vesanalu.weebly.com/uploads/1/3/1/4/131482823/pekugugip_tubun_kavusonofufojam_dipuvozofi.pdfIn PDF document text
- https://kazuvamelu.weebly.com/uploads/1/3/0/7/130738637/ed56b95.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4456128/normal_601d82da35aa1.pdfIn PDF document text
- https://devopududifuwet.weebly.com/uploads/1/3/2/6/132696325/1ad95d054.pdfIn PDF document text
- https://sakixuso.weebly.com/uploads/1/3/4/4/134488330/bd698e019b.pdfIn PDF document text
- https://faxarumi.weebly.com/uploads/1/3/1/6/131606834/17e07564a2.pdfIn PDF document text
- https://gusotefatimadi.weebly.com/uploads/1/3/1/6/131636747/leweperonuxubu.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4383571/normal_5fff634d50519.pdfIn PDF document text
- https://mamonaxerif.weebly.com/uploads/1/3/5/3/135347384/fde5b62d5dfc78.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4411709/normal_5ff5cd5995c6f.pdfIn PDF document text
- https://paduxadoduxim.weebly.com/uploads/1/3/0/7/130775016/0a12c5a5be4bce5.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4450884/normal_5febcf29edeb7.pdfIn PDF document text
- https://tujurexi.weebly.com/uploads/1/3/4/7/134743655/luxuvuxuguti-bumerenixosifug.pdfIn PDF document text
- https://sunivisoxeban.weebly.com/uploads/1/3/4/4/134493344/zibudopineva.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://jabaxuzadowepep.rf.gd/delip.pdfIn PDF document text
- http://zudozam.epizy.com/zowitajukoroxodeluxu.pdfIn PDF document text
- http://gitipezusev.rf.gd/53815158737.pdfIn PDF document text
- http://gutazerabudapa.epizy.com/remembrance_day_poppy_template_printable.pdfIn PDF document text
- http://rubuvajaroxe.epizy.com/47123734488.pdfIn PDF document text
- http://bezegorev.epizy.com/caida_de_cabello_mujeres.pdfIn PDF document text
- http://zomimuju.rf.gd/48959542785.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000c164.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC164	5228 bytes
SHA-256: `2d8a1d5682bdd734ad9ad9dfbaf9b03f7de522ad2e419d718b067a4fd6e58f39`
`font_01_sfnt_off0000d32b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD32B	10256 bytes
SHA-256: `07bbdf47e7dd117c1a2c8b92667ef6bbe10426d3e82428a837deaabd64e324cf`

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