Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea4e2244af58f4ab…

MALICIOUS

PDF

75.1 KB Created: 2021-03-17 09:09:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: caf32038ce72a783361663530a4205bd SHA-1: 4465a00b2379f636b1818b1d3531741205891469 SHA-256: ea4e2244af58f4abf2e7c0cb7e3c38617f761333b7ec7394c2e6451ef630b263
104 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by a machine learning classifier and ClamAV. It contains an embedded URI pointing to 'dafemum.ru', which is likely part of a phishing campaign. The document body, though heavily obfuscated, suggests a lure related to popular media, aiming to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://dafemum.ru/strik?utm_term=does+lara+jean+end+up+with+peter+kavinsky
    • https://cdn-cms.f-static.net/uploads/4448976/normal_5fd8985d32941.pdf
    • https://cdn.sqhk.co/figakeves/d4hdBhc/nudoridanorerirejarojobin.pdf
    • https://cdn-cms.f-static.net/uploads/4416501/normal_601d9f297d07e.pdf
    • https://cdn-cms.f-static.net/uploads/4411683/normal_602974ca46647.pdf
    • http://vorecan.space/78948497363yr17z.pdf
    • http://pemufosapakem.mypressonline.com/33594095312.pdf
    • https://cdn.sqhk.co/zamodozitip/VgcC8Tq/62775452267.pdf
    • http://buwovavozu.getenjoyment.net/suzejivoxakebizowik.pdf
    • http://fipizilemuwob.medianewsonline.com/win_win_lottery_result.pdf
    • https://cdn-cms.f-static.net/uploads/4499629/normal_603fb30e2ad8d.pdf
    • https://cdn-cms.f-static.net/uploads/4460043/normal_6032d5da395e3.pdf
    • http://zoxodur.sportsontheweb.net/bcbs_prior_authorization_form.pdf
    • https://cdn.sqhk.co/sebixodof/ahe7jiI/73762617129.pdf
    • http://pumba.fun/captain_america_pics07pyt.pdf
    • http://remoliwagofaju.mywebcommunity.org/jasovivasiwan.pdf
    • https://cdn.sqhk.co/kolokejo/hhpjfhf/fivem_transport_tycoon_best_way_to_make_money.pdf
    • http://begdas.fun/camon_live_streaming_para_windowsuyjvz.pdf
    • http://triple-doska1.club/16965980413byj63.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/dowavelaxam/16254841427.pdf
    • https://s3.amazonaws.com/xomudufe/pdf_to_word_convert_i_love.pdf
    • https://s3.amazonaws.com/povelenavuviw/bixasovexitakub.pdf
    • https://s3.amazonaws.com/tumuzu/kyoto_japan_restaurant_guide.pdf
    • 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_off0000e5b2.bin
631e9b690c46b04c27ed1992d58f106566b77a1d20cc3894b8985610756cc87a
pdf-font-stream PDF embedded font (sfnt) at offset 0xE5B2 5440 bytes
font_01_sfnt_off0000f84e.bin
ff4de2acd04f52e570cfb476dab43edc400f89358cd34f5ccf7460a6a291ed47
pdf-font-stream PDF embedded font (sfnt) at offset 0xF84E 10608 bytes