Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e08264f26c9b761…

MALICIOUS

PDF

74.7 KB Created: 2021-02-13 23:06:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 609cff45f97266ecc2dd599fd31bb808 SHA-1: 90cd646988e71837750c26524c619e2199357dbc SHA-256: 2e08264f26c9b7614ef4faf10a68ccdf200165ca54428b8015f094f4afcef2dc
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs pointing to disposable domains and a link farm, a common tactic for phishing or distributing further malware. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://leonvi.ru/aws?utm_term=wrap+text+in+google+sheet PDF link annotation
    • https://cdn.sqhk.co/pijajawopoji/biggfYj/momezikugeluzewux.pdfIn PDF document text
    • http://gufutaca6.xyz/clash_royale_free_gems_and_goldp4q25.pdfIn PDF document text
    • http://bazis-rostov.com/14159690579001wu.pdfIn PDF document text
    • http://whalesqpa.fun/ctet_question_paper_20203auhx.pdfIn PDF document text
    • http://summer-italy.fun/jerasajopuladobiluvulowidzky.pdfIn PDF document text
    • http://mif-smeh.space/calculus_with_analytic_geometry7vonb.pdfIn PDF document text
    • http://bio-ita.fun/istiace_utierky_telob3www.pdfIn PDF document text
    • http://voduvalegef.66ghz.com/sojunuwijepubititev.pdfIn PDF document text
    • http://shoppermarket.online/bubawunivesobefhh6b.pdfIn PDF document text
    • http://manekobe.22web.org/bdo_guild_emblem_guide.pdfIn PDF document text
    • http://mir23.xyz/calendrier_2019_imprimerjyweq.pdfIn PDF document text
    • http://anstel.pro/29442236100l3o76.pdfIn PDF document text
    • http://urro-hu.com/zikekosenomumunotapud5qqj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wijixetav.epizy.com/nituvuzelebisaja.pdfIn PDF document text
    • http://kazaxese.epizy.com/nasa_brand_identity_guidelines.pdfIn PDF document text
    • http://jukiwifid.rf.gd/acronis_true_image_home_2017.pdfIn PDF document text
    • http://mawekipabotore.epizy.com/hey_you_pikachu_n64.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.

FilenameKindSourceSize
font_00_sfnt_off0000e7c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7C2 5164 bytes
SHA-256: ebb7b16897db50f3095a21fe10ac20af06fc06be315b0cc500770ec7873c1d0e
font_01_sfnt_off0000f95e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF95E 10668 bytes
SHA-256: 281daba01a2d95286229f28c8ea6738c05d7ae20156e2de5fa2d8a0fa1c34074

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