Malicious PDF — malware analysis report

Static analysis result for SHA-256 429b3740a776de19…

MALICIOUS

PDF

69.0 KB Created: 2021-03-03 09:16:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 11352219579b78b7e5af883ed0f635ac SHA-1: c26c157d3a097e1db8b6c121f0cc2559d34ef6b6 SHA-256: 429b3740a776de195d06a7b4d5540c9d70dba5827b9d0ced3c547643a319b795
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL disguised as a vehicle owner's manual. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The embedded URL is the primary indicator of compromise, suggesting a redirection to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jumiwimov.ru/award?keyword=2008+chevy+express+1500+owner%2527s+manual PDF link annotation
    • https://duvozeja.weebly.com/uploads/1/3/0/7/130739152/devetesexulotu-bupijed-bugexapidoxu-xetumikabaka.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495855/normal_6006500058ff0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384295/normal_6007b5e2027e7.pdfIn PDF document text
    • https://cdn.sqhk.co/kuzosexiwugu/ihhghgr/gisasibemibesapijos.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379616/normal_603783a2e45ba.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390095/normal_5fc578a7825de.pdfIn PDF document text
    • https://tipozuroboga.weebly.com/uploads/1/3/4/2/134265922/teravapalix_kagazibekezip_legekamiboros.pdfIn PDF document text
    • https://delovamubikener.weebly.com/uploads/1/3/4/7/134707073/3306701.pdfIn PDF document text
    • https://cdn.sqhk.co/saligoliti/ajaii1a/nozoxub.pdfIn PDF document text
    • https://cdn.sqhk.co/neliwuwo/4gV2hhm/text_message_alert_tones_free_downloads.pdfIn PDF document text
    • https://zitadinenere.weebly.com/uploads/1/3/1/8/131871439/konalosok-kilajazuzofu-kolixujuradam.pdfIn PDF document text
    • https://bigubuwona.weebly.com/uploads/1/3/4/3/134309174/bolojasiloxit-vixowuwunosenik-mamovesowunix-zofevizodi.pdfIn PDF document text
    • https://cdn.sqhk.co/zimopaji/hcioWhh/bendy_in_nightmare_run_song_1_hour.pdfIn PDF document text
    • https://cdn.sqhk.co/lufelumad/dErW8ic/15221784153.pdfIn PDF document text
    • https://tipozuroboga.weebly.com/uploads/1/3/4/2/134265922/fidasag-ginusaxupofaf-batixole-bakejod.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420587/normal_5ffdf13415f89.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367013/normal_602caee9d6466.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/kokesatodixon/32802857679.pdfIn PDF document text
    • https://s3.amazonaws.com/sonutopexaramuf/norma_aisi_316.pdfIn PDF document text
    • https://s3.amazonaws.com/rujimidujek/67505889097.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_off0000ced8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCED8 6076 bytes
SHA-256: a3dadf15a3939490833deab8a99908842d34c77a244bd78e51e1e2e353ccb8a0
font_01_sfnt_off0000e389.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE389 10200 bytes
SHA-256: 1bc4b03eeac3273ed26f5ef149adba8e8de2db51bd5014e4ccf6039d9df0c8d2

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