Malicious PDF — malware analysis report

Static analysis result for SHA-256 08b4200708fdfc8c…

MALICIOUS

PDF

80.6 KB Created: 2021-03-10 01:40:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 8c19b9d105bf5b0520aa7902a1a0baf3 SHA-1: 206b22ac67d9998f8637d847c65e89aed41fe49c SHA-256: 08b4200708fdfc8c75cb8cc87fa9bf1b042a74bbf934ae126edfa69117ea55bd
126 Risk Score

Malware Insights

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

The PDF contains numerous external URIs and is identified as a link farm hosted on disposable domains, a common tactic for phishing or distributing further malware. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://dugedepap.ru/strik?utm_term=define+go+down+the+rabbit+hole PDF link annotation
    • https://cdn.sqhk.co/letojeka/javWwVE/degisofedewutimufu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448547/normal_6047f4c4058ab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388067/normal_6043193c8bc1c.pdfIn PDF document text
    • http://bajifepeselok.sportsontheweb.net/sesabezawawazit.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415930/normal_5fc737dd2199b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450152/normal_60208e985f224.pdfIn PDF document text
    • http://bavewemelemare.iblogger.org/dish_wally_remote_user_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/ruwiketi/ic0ZAjb/vuxiruwijez.pdfIn PDF document text
    • http://mozobadijoba.medianewsonline.com/calendario_2020_bolivia.pdfIn PDF document text
    • https://cdn.sqhk.co/xenivoronizu/geFidhc/80325833852.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456420/normal_5fed916f38188.pdfIn PDF document text
    • http://nijeratazuw.iblogger.org/96726915427.pdfIn PDF document text
    • https://cdn.sqhk.co/kifavubivelo/cNidgcv/tv_bingo_show_provjera.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470552/normal_6014172057460.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://kazoverowagodi.epizy.com/bollywood_movies_2018_in_hd_avi.pdfIn PDF document text
    • http://xaramoturowuf.rf.gd/68264233945.pdfIn PDF document text
    • http://mevanuzexujen.rf.gd/mibenuziwosu.pdfIn PDF document text
    • http://kojajopi.epizy.com/dijokapagisadezunid.pdfIn PDF document text
    • http://ximogubofew.epizy.com/5342961743.pdfIn PDF document text
    • http://tuwafexom.epizy.com/kupifijipebamumumofatu.pdfIn PDF document text
    • http://bodagoge.epizy.com/8273873672.pdfIn PDF document text
    • http://vefagukolile.epizy.com/niwijajefotiwazapefaz.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE93 5008 bytes
SHA-256: 72af65e2fa7ab5d418a200986ee7169860d055e13468654284d0a460bb1a94fb
font_01_sfnt_off0000ffa4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFA4 11548 bytes
SHA-256: 6e5e05bb3ff49a5c8c32813a3894be8381606cafbb97e00cb567202c30e42d33
font_02_sfnt_off000126f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x126F1 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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