Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ae40a0a333e1354…

MALICIOUS

PDF

81.3 KB Created: 2021-02-15 03:24:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: c5a7529a11257f4197a20ccbe73e880d SHA-1: 2155c5669598327f889bb0dc60834264071444f0 SHA-256: 1ae40a0a333e13541760a02bb3a6b12ac9614b8372afb6f9b9c45495fbd4981d
186 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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://jottigo.ru/123?utm_term=mercedes+benz+stadium+parking+map PDF link annotation
    • http://ig-copyrightnoticehelp.com/fisigozugako4v43d.pdfIn PDF document text
    • https://cdn.sqhk.co/nokotadi/ghwOCig/82429717429.pdfIn PDF document text
    • https://cdn.sqhk.co/wirowanorax/gj4u2hd/64718247925.pdfIn PDF document text
    • https://dexutafabo.weebly.com/uploads/1/3/1/4/131453723/04b39df5477b914.pdfIn PDF document text
    • http://nefuzixitelu.iblogger.org/fuloxa.pdfIn PDF document text
    • http://misstourist.info/29358137761cqsjd.pdfIn PDF document text
    • http://astropsychology.website/65919963693thpi9.pdfIn PDF document text
    • http://belldiscount.ru/fobixomuwh9ewj.pdfIn PDF document text
    • https://cdn.sqhk.co/kebubupoxiz/nKhjbJd/u_boot_board_game_tutorial.pdfIn PDF document text
    • https://lapadodipelij.weebly.com/uploads/1/3/1/1/131164402/f58694b1.pdfIn PDF document text
    • https://kuzogirig.weebly.com/uploads/1/3/4/7/134748708/romop_futifo_matowut_sexasu.pdfIn PDF document text
    • https://cdn.sqhk.co/vozevadijut/5jcjcfv/baxadebeneduvugaritoj.pdfIn PDF document text
    • https://cdn.sqhk.co/tajudozizif/gg2YXtx/80s_songs_tamil_audio.pdfIn PDF document text
    • https://cdn.sqhk.co/jadojibam/jGlhjid/icse_physics_class_9_textbook.pdfIn PDF document text
    • https://cdn.sqhk.co/xubuguxovim/Diev8eu/wilefefexopeto.pdfIn PDF document text
    • http://playmarket-online.com/3ds_emulator_android_requirements5ek08.pdfIn PDF document text
    • https://cdn.sqhk.co/vadetegubufo/gf10z0h/51097540628.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wibefiwijufet.epizy.com/44702620251.pdfIn PDF document text
    • http://sudebitije.rf.gd/xavibupejoduver.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ff72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF72 5620 bytes
SHA-256: fe9cc7d394bc0e65913801fbbf2957c0471969a121af92bab46adf4f3b6443fa
font_01_sfnt_off0001128f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1128F 10852 bytes
SHA-256: c5d69a56b51ec35de1bae91deb62e55e12e083cfeec12b124fc18e539ea0e779

Open this report in the interactive analyzer, or submit your own file for analysis.