Malicious PDF — malware analysis report

Static analysis result for SHA-256 b59e0a8308104150…

MALICIOUS

PDF

83.1 KB Created: 2021-01-19 18:14:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: b1c0cb0d974881e7ff750220e9b8d839 SHA-1: 9445ff4e3d62af05eefaff1fd8f5103adc78bcc9 SHA-256: b59e0a8308104150f4b66bc48b76b308358dc33a6466b83f3c0f3b34be4aa489
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document is classified as malicious by ML and ClamAV, and exhibits characteristics of a link farm designed to redirect users. The document body, though heavily obfuscated, contains references to a Jeep owner's manual, likely a lure to entice users to click on embedded URLs. The primary URL, 'https://traffset.ru/aws?utm_term=jeep+grand+cherokee+limited+1999+owners+manual', suggests a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 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://traffset.ru/aws?utm_term=jeep+grand+cherokee+limited+1999+owners+manual PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4477649/normal_5fbf386328c18.pdfIn PDF document text
    • https://site-1200839.mozfiles.com/files/1200839/d_d_auto_fill_character_sheet_5e.pdfIn PDF document text
    • https://site-1246486.mozfiles.com/files/1246486/yahoo_answer_calcio_italiano.pdfIn PDF document text
    • https://site-1248608.mozfiles.com/files/1248608/types_of_metal_forming_process.pdfIn PDF document text
    • https://suganolorifumu.weebly.com/uploads/1/3/0/8/130814011/xitiruguxanib-korufepo-wesigodu-negaf.pdfIn PDF document text
    • https://site-1166042.mozfiles.com/files/1166042/sweet_empire_mod_apk_unlimited.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475863/normal_5fcf01e43e4a6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390643/normal_5faba33394dba.pdfIn PDF document text
    • https://deremufirig.weebly.com/uploads/1/3/4/8/134854029/1559f746f4773ab.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426953/normal_5fe4656dd03f0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4529095/normal_5fccfeb5de07d.pdfIn PDF document text
    • https://zulitaxovali.weebly.com/uploads/1/3/5/3/135351491/6493ee1cbef.pdfIn PDF document text
    • https://vavuxajibibugu.weebly.com/uploads/1/3/4/4/134472661/2391767.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408712/normal_5ffa0c70a7064.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392647/normal_5f97aedc0e435.pdfIn PDF document text
    • https://togoxijagujeg.weebly.com/uploads/1/3/0/7/130775712/nozifep.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464869/normal_5fdeeae0ebc9c.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/mutirexa/regifepomaxoludinutefik.pdfIn PDF document text
    • https://s3.amazonaws.com/nuvukivaxiren/70557745864.pdfIn PDF document text
    • http://voniziveput.rf.gd/mukelotib.pdfIn PDF document text
    • https://s3.amazonaws.com/kezemiradigu/mesidobumazapirutu.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_off000106cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106CB 5840 bytes
SHA-256: 3dd28b8b2a17bdaf953a4973e05ad9de94af05279075ff32713938235b9bb6a6
font_01_sfnt_off00011a99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A99 10500 bytes
SHA-256: 85e69ff9eafe354e1d20d2d9aa69f0787829c75c57f463e6d04a9386954a9a29

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