Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c89c685034ca8f0…

MALICIOUS

PDF

71.6 KB Created: 2021-02-14 16:50:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: e82983f00dc6ab8410a2aefe1970519c SHA-1: 124500c71e453f201757ca8088ab9c9cc76a0a06 SHA-256: 8c89c685034ca8f03afd2f5abe1391a934b6f7619509de55c4c31c8791696508
156 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 0.9820

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
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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/aws?utm_term=sequin+formal+dresses+australia PDF link annotation
    • https://cdn.sqhk.co/nifodotiriru/idja8Up/35782147881.pdfIn PDF document text
    • https://rokawutavepuma.weebly.com/uploads/1/3/0/7/130776645/funumizuvoju-jutafalobekeki-paxoxido-sejodoximaza.pdfIn PDF document text
    • http://kuzegajozux.iblogger.org/78524466236.pdfIn PDF document text
    • http://razvivatel.blog/bike_stunt_game_apkwsh2h.pdfIn PDF document text
    • https://cdn.sqhk.co/sebutarukaw/gLBgdpd/baresosofifumekupagex.pdfIn PDF document text
    • http://opssmall.space/fukudojrusx.pdfIn PDF document text
    • https://woseluwimi.weebly.com/uploads/1/3/4/1/134131525/jewokegusu.pdfIn PDF document text
    • https://cdn.sqhk.co/lojulifuvuxu/hi8idzG/hashtags_generator_for_instagram_free.pdfIn PDF document text
    • http://qunit.space/1152773720mmrph.pdfIn PDF document text
    • http://lojotiwutorolad.22web.org/munenepemaxom.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/zuwosil/66397480687.pdfIn PDF document text
    • https://s3.amazonaws.com/jikopot/easy_card_creator_software_free.pdfIn PDF document text
    • https://s3.amazonaws.com/matogapibelifiv/gepobofakuguzunuvegop.pdfIn PDF document text
    • https://s3.amazonaws.com/dadupawo/70684225099.pdfIn PDF document text
    • https://s3.amazonaws.com/gewuwasi/software_quality_analyst_interview_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/resisuna/19521553418.pdfIn PDF document text
    • http://wixudilasajigil.rf.gd/43795898093.pdfIn PDF document text
    • https://s3.amazonaws.com/wisuw/madidadojabulitasadotiw.pdfIn PDF document text
    • http://nuvitaros.epizy.com/block_all_restricted_calls_android.pdfIn PDF document text
    • https://s3.amazonaws.com/jodabiladezot/mokegigerawexolizi.pdfIn 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_off0000e7c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7C2 5284 bytes
SHA-256: a8a210f03a1253766b4ba93552b444f4912d4043a079555969df4f6d176edba2
font_01_sfnt_off0000f99d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF99D 10600 bytes
SHA-256: 3b0c24bd24dccdbe99276833d208a917c68bf990d7d914a85a4fc245c6075c81

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