Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d507e92f1208bc6…

MALICIOUS

PDF

71.0 KB Created: 2021-02-09 15:47:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 8b0f52e9b1dac7e4cdc927f3c3ec8e1b SHA-1: 0e6106bb350c9114ed5deec07b09eace1487e312 SHA-256: 2d507e92f1208bc69a963a30e237d28ac18dd07955945617cd16b6d4a8cfdeeb
186 Risk Score

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/wb?keyword=fireworks%20minecraft%20guide PDF link annotation
    • http://nature-ital.space/sifubovuw2ej8.pdfIn PDF document text
    • https://cdn.sqhk.co/matijamaj/g0QYihS/jurassic_survival_guide.pdfIn PDF document text
    • https://zidimegaga.weebly.com/uploads/1/3/0/9/130969389/pukovij_rujerutobot_zivivekorevagox_bafut.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372702/normal_5ffbefdf712c7.pdfIn PDF document text
    • http://keto-menu.online/sowewimofi6t2d0.pdfIn PDF document text
    • https://lasebotoxuxuxir.weebly.com/uploads/1/3/4/7/134729765/242aec8c29.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452618/normal_6015b66aa4ce7.pdfIn PDF document text
    • https://cdn.sqhk.co/tokebamojos/SYogh3H/freeze_dried_strawberries_recipes.pdfIn PDF document text
    • https://malolikekex.weebly.com/uploads/1/3/4/7/134718462/b3bce23d30269c6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383300/normal_5ffd38caceef7.pdfIn PDF document text
    • https://cdn.sqhk.co/supesuvepo/hjgd7UE/soccer_online_betting_tips.pdfIn PDF document text
    • https://cdn.sqhk.co/kedezoge/Bthehbd/football_referee_signals.pdfIn PDF document text
    • https://cdn.sqhk.co/zukasedu/ficifx9/debomix.pdfIn PDF document text
    • https://cdn.sqhk.co/zupodejadofe/gf7eDha/kosenizawatijizupipejig.pdfIn PDF document text
    • https://cdn.sqhk.co/tadawatimi/g4hbijs/lover.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374185/normal_600407e3d5c95.pdfIn PDF document text
    • http://iuts.space/fortnite_blender_models8017n.pdfIn PDF document text
    • https://tavovoxiwazufaj.weebly.com/uploads/1/3/5/3/135325502/zelimapipal-zaxoge-rikiwekevajaros-metewenizupi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d985.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD985 5420 bytes
SHA-256: 3bfd67d0a49e9ee0f5f7b36264bff7edaf3c11f489c29e593eab1bc8456b476d
font_01_sfnt_off0000ebf9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBF9 10216 bytes
SHA-256: 41dca8a265f85a62b7b03a890b02d7c945611e375fb375a7f9e123731823210b

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