Malicious PDF — malware analysis report

Static analysis result for SHA-256 a702cc48a185ea57…

MALICIOUS

PDF

83.1 KB Created: 2021-02-18 00:28:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 750598e6c7612b557aa694f9853c1365 SHA-1: 36f5e76fc0d490f52389e8e91ec8e17d5f74bda6 SHA-256: a702cc48a185ea574f4a826a644d8c7df08fcf83d8f3516378f5d4c1be79dfb3
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV. It contains a large number of external links, many pointing to disposable domains, characteristic of a link farm or phishing operation. The embedded URLs suggest an attempt to redirect users to potentially malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://maypoin.ru/strik?utm_term=how+to+remove+drip+pans+on+electric+stove PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4383806/normal_600ee1633ac3d.pdfIn PDF document text
    • https://fuvapevamasazu.weebly.com/uploads/1/3/4/5/134507747/gilaxalu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404308/normal_5ff78ef3596b3.pdfIn PDF document text
    • https://cdn.sqhk.co/wixefawoz/cjeOCnB/vasojulijowuj.pdfIn PDF document text
    • https://cdn.sqhk.co/jisanipu/ggihiat/smart_tools_pro_apkpure.pdfIn PDF document text
    • https://cdn.sqhk.co/zumufapofow/usxijms/empire_warriors_tower_defense_td_strategy_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/kigimijexap/8idijgd/ice_cream_cone_puddle_jumper.pdfIn PDF document text
    • https://cdn.sqhk.co/jabuvilir/cojhpgh/kepawawezumojirifutug.pdfIn PDF document text
    • https://cdn.sqhk.co/mopijiluxu/ithholl/top_10_songs_of_the_90_s_youtube.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501995/normal_602a4807c8e66.pdfIn PDF document text
    • https://jadegivi.weebly.com/uploads/1/3/4/8/134851053/1543633.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455399/normal_5fcaa2aba6f9a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447280/normal_60282344b2fb4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418991/normal_6010a8753835c.pdfIn PDF document text
    • https://cdn.sqhk.co/fuwegamuvev/jeGZjdr/zuselen.pdfIn PDF document text
    • https://cdn.sqhk.co/ratufewebu/bFHNjh1/kewugefesolefesoz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jijilijovejoto.rf.gd/59018838039.pdfIn PDF document text
    • http://dogamesesokuj.rf.gd/aadhaar_form_filling_example.pdfIn PDF document text
    • http://mirepili.epizy.com/email_format_for_wedding_leave.pdfIn PDF document text
    • http://gawasaxe.epizy.com/peter_answering_your_questions.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
    • 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.

FilenameKindSourceSize
font_00_sfnt_off0000f38b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF38B 5332 bytes
SHA-256: 488bd385bfb0433b0d9ed403db82305131a834913f215b037ec9afb806dac0a4
font_01_sfnt_off000105a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105A7 10404 bytes
SHA-256: 798b105ba484625b929b926a310e5b4f202909fde6448bffe0f3f3dcfefc4e8e
font_02_sfnt_off000128c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x128C0 16376 bytes
SHA-256: 684a3c196e802b4dc45ee85e0d12f41c83d6b6c6a55a83cec5fb8e332ee9aa36

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