Malicious PDF — malware analysis report

Static analysis result for SHA-256 67ff6223334fcf57…

MALICIOUS

PDF

66.7 KB Created: 2020-12-31 20:40:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 8a950a60883b0e1eadbc53520196e5ff SHA-1: 746e84e49c73658280b93ee67fd085455c1b9166 SHA-256: 67ff6223334fcf57aff6b10eb05650a092a404306e5e0689068fa8d30641c70a
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was identified as malicious by ML classifiers and ClamAV, flagging it as a phishing trojan. It contains a large number of external links, with a critical heuristic identifying it as a PDF SEO link farm. The primary URL observed is 'https://trafficel.ru/strik?utm_term=fernanfloo+juega+geometry+dash+sub+zero', which likely serves as a lure or entry point for further malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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://trafficel.ru/strik?utm_term=fernanfloo+juega+geometry+dash+sub+zero PDF link annotation
    • https://pepajodik.weebly.com/uploads/1/3/1/4/131453945/648042.pdfIn PDF document text
    • https://savakorudefipe.weebly.com/uploads/1/3/2/3/132303238/metivo-gupikuzowudo-zojunexon-befaditirawuwov.pdfIn PDF document text
    • https://cdn.sqhk.co/libidexa/DibjeGS/fruit_smashing_comedian.pdfIn PDF document text
    • https://gabejopow.weebly.com/uploads/1/3/4/5/134597712/0dffbb5e.pdfIn PDF document text
    • https://kupelaranix.weebly.com/uploads/1/3/4/7/134729830/631229.pdfIn PDF document text
    • https://cdn.sqhk.co/nezusoxe/iRnF7ge/9229878146.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/09c5e07b-6881-4152-859f-821d5d90f4a2/38122191603.pdfIn PDF document text
    • https://s3.amazonaws.com/vudivuzakal/capsa_susun_for_pc_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/dinisemowoge/automotive_lighting_design.pdfIn PDF document text
    • https://s3.amazonaws.com/tometubufimopim/jazusenemumekevikawuw.pdfIn PDF document text
    • https://s3.amazonaws.com/ninazarila/branches_of_philosophy_notes.pdfIn PDF document text
    • https://s3.amazonaws.com/jedaxopopuko/android_games_like_pokemon_reddit.pdfIn PDF document text
    • https://s3.amazonaws.com/xeponodij/critical_angle_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/rebomedug/angry_bird_cartoon_movie_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f6e03ec-4bb5-4b94-878f-d7e9eb88b7d9/61674627323.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_off0000c834.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC834 5644 bytes
SHA-256: a36061538c5323002bf69b87eb9b60937ac7c2469bcab369f1fe656c5e65919b
font_01_sfnt_off0000db55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB55 10092 bytes
SHA-256: 1dd6e66b5bf90328eca7d24e0bbf99113e425a9712064a7209568a7460c10601

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