Malicious PDF — malware analysis report

Static analysis result for SHA-256 89e31ec08b1c9676…

MALICIOUS

PDF

76.2 KB Created: 2020-12-22 19:52:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: ea626758a5275348730368b0eb4a9384 SHA-1: b7fa4fa0d0c24f22ee3348fe8ae1b6fd94bc22f2 SHA-256: 89e31ec08b1c96760a6e7047fb2e20b2ea29176d4de9ca88e6fc43ec39a32a72
156 Risk Score
Tags
free-cdn-ebook-manual-lure

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 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
  • 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://trafffe.ru/strik?utm_term=2+player+horror+games+xbox+1 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366015/normal_5f88591839896.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384835/normal_5f8ea789f3b1d.pdfIn PDF document text
    • https://wuduzavuvavazi.weebly.com/uploads/1/3/4/6/134618101/a8e547246fc41c.pdfIn PDF document text
    • https://fodorofofojep.weebly.com/uploads/1/3/4/7/134769626/c41d213e8f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/kudefem/bovetidomoxugijo.pdfIn PDF document text
    • https://s3.amazonaws.com/daniwodug/bootstrap_textarea_form-_control.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc167576609fd0ee794de9f/t/5fd1cb42ce71ee580fab70db/1607584579025/fekosa.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd0c7eec0a1d2b4e57cf25/1606225027482/dunetaderemukabetulen.pdfIn PDF document text
    • https://s3.amazonaws.com/sinadi/idiopathic_thrombocytopenic_purpura_pathophysiology.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e01f2cf09257bd6be9c2/t/5fc3eac85147b14804ab7862/1606675145018/kisex.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe06d43570fb44d1ca1b7d/1606289114985/muqaddimah_ibn_khaldun_review.pdfIn PDF document text
    • https://s3.amazonaws.com/datarofapakil/86193838798.pdfIn PDF document text
    • https://s3.amazonaws.com/sazomo/51095327313.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6743f88c99b6d37cd7f20/t/5fcd1dc1c836a917f9140c8f/1607278018407/wheel_size_bike_computer_calculator.pdfIn PDF document text
    • https://s3.amazonaws.com/varoximu/18072061561.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dfc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFC6 5184 bytes
SHA-256: 52f4afc575c7d76c227c7f380c3b809644e96cff466e1aa36f56f1c097ec1341
font_01_sfnt_off0000f169.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF169 10708 bytes
SHA-256: 0b541433caf4f5fd94e1c924f7df8e76d157e752f95051f5678b266e6c9e4eb6
font_02_sfnt_off0001158a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1158A 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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