Malicious PDF — malware analysis report

Static analysis result for SHA-256 979eada0c2ea6dd7…

MALICIOUS

PDF

70.0 KB Created: 2021-02-20 04:29:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: 0f667b4124289ac7969bae21ae25c754 SHA-1: a173b431e65ab328f1b0e9c33bbe2a19761fd44a SHA-256: 979eada0c2ea6dd7dd3ff509a851b775d4c8ebd74772b9c81d3dad31e7e6f801
126 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it is a link farm and has been flagged as malicious by ML classifiers and ClamAV. The document body, though obfuscated, contains references to a car model, likely a lure. The primary IOC is a URL that appears to be part of a phishing or redirection scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://jottigo.ru/strik?utm_term=2021+lexus+rx+350+f+sport+hybrid PDF link annotation
    • http://theboldpantsproject.com/racing_go_kart_engine_partsphd50.pdfIn PDF document text
    • http://love-cosmetics.shop/kindle_model_d01100_review5c7af.pdfIn PDF document text
    • http://lady-bug.club/dyson_v7_animal_cordless_vacuum_pricewpz2a.pdfIn PDF document text
    • http://nikecortez.net/google_adwords_certification_study_guide38kti.pdfIn PDF document text
    • http://interbank.link/worksheetworks_diamond_math_problems_answer_keyblxj4.pdfIn PDF document text
    • http://dezuforupom.iblogger.org/vejumobabuvukurud.pdfIn PDF document text
    • http://oneshops.space/624637882971ls4d.pdfIn PDF document text
    • http://energytik.net/android_auto_app_update_2019bt8yh.pdfIn PDF document text
    • http://zakunofukar.iblogger.org/rilobafulamumalotatukom.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://roniwixanedif.epizy.com/52867001798.pdfIn PDF document text
    • https://s3.amazonaws.com/suzujewa/el_virus_informatico_caballo_de_troya.pdfIn PDF document text
    • https://s3.amazonaws.com/lonozote/pozunudebipagodivisoboji.pdfIn PDF document text
    • http://pasudef.rf.gd/anatomical_directions_worksheet_answers.pdfIn PDF document text
    • http://sewogixura.rf.gd/98590581484.pdfIn PDF document text
    • https://s3.amazonaws.com/xurixado/89561032543.pdfIn PDF document text
    • http://rijewetevoxo.rf.gd/werejut.pdfIn PDF document text
    • http://zutagokakaki.rf.gd/todutekap.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_off0000d2b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2B9 5748 bytes
SHA-256: 59353f83e018fa88811e08bf76f5bf4c0f8ff01eb0a48c08c2dc376b36852d12
font_01_sfnt_off0000e651.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE651 10700 bytes
SHA-256: 9d90065572c248a2f07c32cfc197a550bf7e9b4dbfcb29a9363e727aba6f327a

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