Malicious PDF — malware analysis report

Static analysis result for SHA-256 eaf23d2d35601d52…

MALICIOUS

PDF

75.7 KB Created: 2021-02-16 03:40:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 41e1261d6ba23cd6b42f9bc61a009063 SHA-1: a61f2f17ce71c9db17b41c57ef81829936b9e4ab SHA-256: eaf23d2d35601d52a5394e305cf0078939a7113758544ba8bf74aedd58a20864
96 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, with a high risk score. It contains an embedded URI pointing to a suspicious domain, likely intended to host phishing content or a further payload. The document body, though heavily obfuscated, suggests a lure related to 'Youtube the great depression causes and effects', indicating a social engineering attempt to trick the user into visiting the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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=youtube+the+great+depression+causes+and+effects PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4476927/normal_5ff3ef76cacee.pdfIn PDF document text
    • https://cdn.sqhk.co/zogameva/jbXqhfz/telepsychology_50_state_review.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501208/normal_5fef50bfe5940.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402014/normal_5fdc0f4c9b2d6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4528915/normal_5ffc6d278a525.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404124/normal_5fd15d5268ca2.pdfIn PDF document text
    • http://webmastervlad.ru/jifujevqr2dm.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416675/normal_60160a6a98cfa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374953/normal_602af2280f9e0.pdfIn PDF document text
    • https://cdn.sqhk.co/dimowitop/gd4ibOh/52526032812.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417992/normal_5ff27bef72758.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459641/normal_5ff6adf024671.pdfIn PDF document text
    • https://cdn.sqhk.co/dedizozife/eSDfjgi/best_bookshelf_speakers_2020_under_200.pdfIn PDF document text
    • https://cdn.sqhk.co/kufagilan/uhehfCC/free_games_to_play_now_quickly_offline.pdfIn PDF document text
    • http://fawetugamuxix.66ghz.com/business_english_frameworks.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446643/normal_600919503557d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408188/normal_5ff27798da33a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ridabus.epizy.com/vevor_ice_cream_machine_manual.pdfIn PDF document text
    • http://sidakofonol.epizy.com/adventure_tourism_activities.pdfIn PDF document text
    • http://pixagikaw.epizy.com/aadat_tu_meri_punjabi_song_free.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_off0000ea98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA98 5488 bytes
SHA-256: e46f73ea3a046f12ef6bc9d3b3d4420150cfba45fc8ed22b45c0cced6117dda2
font_01_sfnt_off0000fd38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD38 10628 bytes
SHA-256: b502c5518463d5c5917c799ecb36d3f417e923e6d4524612f825d1fd1f3d9da3

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