Malicious PDF — malware analysis report

Static analysis result for SHA-256 64a6f8b3e44f69a0…

MALICIOUS

PDF

76.0 KB Created: 2021-02-27 19:08:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 8840181ba420097055d4af5791ecabb7 SHA-1: 39c848f7108496b33e2fe68e84141e65e945b9af SHA-256: 64a6f8b3e44f69a066b621ec032862cf281230e8219ad88abb8a56efea751e14
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs pointing to disposable hosting and link farms, a common tactic for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to malicious sites, likely as part of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://xezojetit.ru/strik?utm_term=can+paint.net+open+svg PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4460243/normal_6005fb5de25a6.pdfIn PDF document text
    • https://cdn.sqhk.co/kinemefuwa/jhaYDii/snappa_twitch_offline_banner.pdfIn PDF document text
    • https://cdn.sqhk.co/dabozijide/etjiidR/59193950010.pdfIn PDF document text
    • http://moitender.org/gagaferositik6wpmy.pdfIn PDF document text
    • https://gadiziwit.weebly.com/uploads/1/3/1/4/131406086/d511ac3253.pdfIn PDF document text
    • http://movawizaxaxato.mywebcommunity.org/intex_sand_filter_pump_instructions.pdfIn PDF document text
    • http://nicepics.xyz/wamufefegamosotafelisejiqcn63.pdfIn PDF document text
    • https://zokatitolef.weebly.com/uploads/1/3/4/7/134702636/poxine-tuvabodi.pdfIn PDF document text
    • https://fepobiwebefu.weebly.com/uploads/1/3/4/5/134592484/9704264.pdfIn PDF document text
    • https://cdn.sqhk.co/pufuxogife/ghiigjw/722327905.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482847/normal_5feb43f2b4ecb.pdfIn PDF document text
    • https://kukibutojiw.weebly.com/uploads/1/3/0/7/130775835/pilazaz.pdfIn PDF document text
    • https://cdn.sqhk.co/tunaluvum/q1hcDkH/93213628291.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470533/normal_6009cb84c20c1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402712/normal_600479c233bb2.pdfIn PDF document text
    • http://13millions-warzone.store/acepciones_del_derechoqn7t5.pdfIn PDF document text
    • https://cdn.sqhk.co/wuvupalib/hj1LOl5/single_red_rose_tattoo_meaning.pdfIn PDF document text
    • http://rafupofamurawaf.mygamesonline.org/sony_rx10_v_news.pdfIn PDF document text
    • http://samettemiz.xyz/famuwugenelomexurepuvumimq73b3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://faleferesevo.onlinewebshop.net/xejozotilejaluxevewe.pdfIn PDF document text
    • https://s3.amazonaws.com/tuletivotarupu/77776233770.pdfIn PDF document text
    • https://s3.amazonaws.com/kumasala/panoxojoxoropib.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_off0000ec72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC72 4856 bytes
SHA-256: 793b2d51cd173f33d5604be73f7f6aa29fb0907906da19705e9d1fb54bb49526
font_01_sfnt_off0000fd18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD18 11176 bytes
SHA-256: 02b918a9317d7bfdc907c79ac743db8bb8873111bd285a39869d503470a261c0

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