Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e12effc773e168d…

MALICIOUS

PDF

69.5 KB Created: 2021-03-08 04:40:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: ab43d90fe4cf9b0e35922d92af11cbff SHA-1: 79b3df61ba701b63cb48ea6f71921dc493f5b6c1 SHA-256: 1e12effc773e168da4a64890e240728580e1f54320a9e7a6c7c70604256f6631
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution 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 0.8989

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
  • 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
  • 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://xajibur.ru/award?keyword=competency+based+questions+for+team+leader PDF link annotation
    • http://comp-arenda.site/94292582619btvlh.pdfIn PDF document text
    • http://instgramcopyrightdispute.com/634538919775idqh.pdfIn PDF document text
    • http://fepekasizu.iblogger.org/the_last_airbender_telugu_movie.pdfIn PDF document text
    • https://gasilarax.weebly.com/uploads/1/3/4/5/134595303/nisuza.pdfIn PDF document text
    • https://nibuduki.weebly.com/uploads/1/3/5/3/135314859/2388272.pdfIn PDF document text
    • http://itayoga.space/xejumitijurelifedabusupioiojo.pdfIn PDF document text
    • https://padazuvotoj.weebly.com/uploads/1/3/4/6/134687326/lemakelawi.pdfIn PDF document text
    • https://wajifisawebe.weebly.com/uploads/1/3/4/4/134480175/5337476.pdfIn PDF document text
    • http://copyrightsupport-ig.com/85270458716serp4.pdfIn PDF document text
    • http://aduo5.online/conversion_g_cm3_en_kg_m3l3e77.pdfIn PDF document text
    • http://policyhelpcenter.com/sagemcom_fst_5260_router_logini7bpn.pdfIn PDF document text
    • http://setofexperience.site/noginnyhtp.pdfIn PDF document text
    • http://lishop.site/129408479185k6fl.pdfIn PDF document text
    • https://kalogipewaga.weebly.com/uploads/1/3/4/5/134595512/9907783.pdfIn PDF document text
    • https://lafozevu.weebly.com/uploads/1/3/4/3/134378288/zodixalo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/baf14532-0aa7-427e-889d-c6d7938ff44d/mujodufupawere.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/109913c9-3336-4644-87f7-5430db1bbf5b/libro_el_arte_de_hacer_dinero_mario_borghino.pdfIn PDF document text
    • http://vaduxovogemuke.epizy.com/gelizizugelirudora.pdfIn PDF document text
    • http://fuxobubuwuvivil.epizy.com/49802491815.pdfIn PDF document text
    • http://kalotiwinilobiw.epizy.com/free_substitute_teacher_lesson_plan_template.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000103c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103C1 5572 bytes
SHA-256: 936fe49fbac872d9953490d4bc637a44a1049184d295ab67076f3abaa7a67f1a