Malicious PDF — malware analysis report

Static analysis result for SHA-256 f95ce95d89b5bab7…

MALICIOUS

PDF

80.4 KB Created: 2021-05-29 17:30:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: e47d806405cbb58d47e4d37b1f3ab8e2 SHA-1: 471fe1cead0328f4c68e437d15621567afd9bec2 SHA-256: f95ce95d89b5bab771621d2d7f1d11e78f3c22176d255a8c9f26b704b2471b72
194 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or redirection infrastructure. The document body, though heavily obfuscated, contains keywords related to urgency, which is a common lure in phishing attacks. The primary attack pattern involves directing users to external sites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 7

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://leonvi.ru/strik?utm_term=how+long+does+afb+smear+take PDF link annotation
    • https://junenewawaxi.weebly.com/uploads/1/3/1/4/131407408/7631549.pdfIn PDF document text
    • https://donokodupotev.weebly.com/uploads/1/3/4/3/134317189/5729665.pdfIn PDF document text
    • https://nozagovedenide.weebly.com/uploads/1/3/2/6/132682533/wazapejis_dupin.pdfIn PDF document text
    • https://bafokaxaxex.weebly.com/uploads/1/3/4/8/134881351/lekifafu.pdfIn PDF document text
    • https://xonuvalax.weebly.com/uploads/1/3/1/4/131437330/xunovuloximujo.pdfIn PDF document text
    • https://xixunogada.weebly.com/uploads/1/3/4/3/134343035/4068076.pdfIn PDF document text
    • https://nodukuzizowuw.weebly.com/uploads/1/3/4/0/134000349/basufofev.pdfIn PDF document text
    • https://segurabo.weebly.com/uploads/1/3/5/9/135964373/fusuxazideze.pdfIn PDF document text
    • https://wuxigato.weebly.com/uploads/1/3/2/6/132680835/mogubadejofu.pdfIn PDF document text
    • https://dobojadu.weebly.com/uploads/1/3/2/7/132711966/bizogup.pdfIn PDF document text
    • https://digulowewuw.weebly.com/uploads/1/3/4/3/134363346/726d6e94c2.pdfIn PDF document text
    • https://rulodewarozuw.weebly.com/uploads/1/3/4/6/134678260/lodaxabokazufix-fenule-zomotimo-sokimibidumuja.pdfIn PDF document text
    • https://xovesoxak.weebly.com/uploads/1/3/0/8/130813458/tujelosi.pdfIn PDF document text
    • https://getarejiviwos.weebly.com/uploads/1/3/4/6/134683174/2809169.pdfIn PDF document text
    • https://ridegagix.weebly.com/uploads/1/3/4/6/134668883/mepuwumapetevugo.pdfIn PDF document text
    • https://labopepiw.weebly.com/uploads/1/3/4/7/134747507/42227a9.pdfIn PDF document text
    • https://foregizof.weebly.com/uploads/1/3/4/8/134890581/9576901.pdfIn PDF document text
    • https://fiduwovizeget.weebly.com/uploads/1/3/4/5/134517619/152a82cd18d5a19.pdfIn PDF document text
    • https://gamuxexa.weebly.com/uploads/1/3/5/2/135296165/xadirat.pdfIn PDF document text
    • https://bavoramexur.weebly.com/uploads/1/3/5/3/135326869/4872870.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/238751a9-c1bc-4fc9-834d-aadcdb29ced5/19714508255.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d37192e8-c32a-4679-adea-03f95d2e925f/the_american_journey_guided_reading_activity_answer_key.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ed92a96e-1508-4623-9230-1db661537f4b/lazarillo_de_tormes_english.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_off0000fbcc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBCC 5484 bytes
SHA-256: 6e7fe40a1465adc39f2e678718c331dd5a049fda47ea372833b73c92411798c0
font_01_sfnt_off00010e71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E71 11108 bytes
SHA-256: 2344d40789d706738579eac0509fa182b7c41a118fb813541ff217aef93005d7

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