Malicious PDF — malware analysis report

Static analysis result for SHA-256 034f1ef4a752238e…

MALICIOUS

PDF

81.5 KB Created: 2021-02-11 12:34:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 281302127242994f048e1ff5795c8705 SHA-1: 6ddf3d0b25a4b14298d0a98077b7a8d920c152fd SHA-256: 034f1ef4a752238e676c02ed9c0f22c8f76eb9e72b1745d6ffea9544c4113a10
144 Risk Score

Malware Insights

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

The PDF document contains lures related to advance-fee scams and fake invoices, as indicated by the 'SE_ADVANCE_FEE_SCAM_LURE' and 'SE_INVOICE_LURE' heuristics. It also embeds external URLs, one of which is associated with a 'bealls outlet return policy' lure. While no scripts were explicitly extracted, the ML classifier and ClamAV detection strongly suggest malicious intent, likely involving the execution of a secondary payload via one of the embedded URLs.

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
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://jottigo.ru/123?utm_term=bealls+outlet+return+policy
    • http://shopbest.online/broadsheet_hobart_2019rxwr7.pdf
    • http://profapp.pro/37842717721x35qu.pdf
    • http://trells.space/comportamiento_del_consumidor_schiffman_11_edicion_gratisqsb97.pdf
    • http://sport-stavki.fun/pokemon_card_buyers_near_mevmwzj.pdf
    • http://runolive.com/short_disney_movie_quotes_about_lifep4nqg.pdf
    • https://nigenodesi.weebly.com/uploads/1/3/4/4/134480521/1342291.pdf
    • http://healsmall.space/47359570572xa544.pdf
    • https://sokifaxus.weebly.com/uploads/1/3/4/6/134666683/2489303.pdf
    • https://cdn-cms.f-static.net/uploads/4462354/normal_60154ab14f92a.pdf
    • http://d2-club.ru/sworn_affidavit_form_template_irelandesd06.pdf
    • http://letxxnx.org/concepts_of_genetics_solutions_manualbfer7.pdf
    • http://opit.space/jimutugipotomapp6.pdf
    • https://cdn-cms.f-static.net/uploads/4368731/normal_6023172f8570c.pdf
    • https://kegipulavuraruz.weebly.com/uploads/1/3/1/1/131163865/mozuzumulitibir.pdf
    • http://ita-bio.fun/conundrum_book_anuj_dhar_freepwiv9.pdf
    • http://raftgjgr.space/xoxiduwp3c6.pdf
    • https://sowujapureku.weebly.com/uploads/1/3/0/9/130969862/nafunenepumapogug.pdf
    • http://naturalgood.space/zalutouok4z.pdf
    • https://cdn.sqhk.co/nulegudup/wjc2Xgc/video_downloader_app_free_for_iphone.pdf
    • http://bostpolamos.site/bebabuxabulebafewetabf7qz1.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010496.bin
0cb79277fc9e5501c613850a7973556d06f4d944a59ca2339a0fcf0127d3b08e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10496 5076 bytes
font_01_sfnt_off000115f0.bin
16abe30b9e7111a2b38b4b1f4888c4ef22cebb31d17859b4989f824b319c5cf7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x115F0 10324 bytes

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