Malicious PDF — malware analysis report

Static analysis result for SHA-256 f142358d7906cad2…

MALICIOUS

PDF

69.2 KB Created: 2020-11-21 05:07:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: cf21f9ad9a2de5cf27f2dc79baf0d32c SHA-1: 9da41a8acf7ac86bbb12fc6b07d4a49a065fbe14 SHA-256: f142358d7906cad2722c83682efabba9c9bc683a8319a568db53884e1629060a
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://traffnew.ru/123?utm_term=bass+hunter+bass+baby+price PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4375690/normal_5f8ad474cd67d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368979/normal_5f897895edfa2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370077/normal_5f8ecd8368a0f.pdfIn PDF document text
    • https://mabanopovofed.weebly.com/uploads/1/3/1/4/131453130/3578579.pdfIn PDF document text
    • https://jubezotezuwu.weebly.com/uploads/1/3/4/4/134476040/palupevowekefam.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380392/normal_5f8f63e7481dc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367302/normal_5f8ab5eb268d3.pdfIn PDF document text
    • https://dudonufol.weebly.com/uploads/1/3/4/6/134634650/binemuzuxerarud_gofusomarijumun_nabamituw_letedelogu.pdfIn PDF document text
    • https://kapekutom.weebly.com/uploads/1/3/4/4/134437999/tuwiteradorile_pebatasa_fujotafubedago_kozakibilome.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/busutafitufe/6279687673.pdfIn PDF document text
    • https://s3.amazonaws.com/zasepo/roraxemowulofajeloxekan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/164aee16-804e-4304-b17a-b1546fac779f/36451228601.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/963adc62-aeba-4d7e-8bfb-fe53d26caf52/sululiwavoxejubufatupotu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd0cb224-e709-4e8b-a246-18a42b14222f/zupeke.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 7

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_off0000d398.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD398 5280 bytes
SHA-256: 37fe8eb7704e02c905e6349372661d3644831aec27e8a0ff8c6b942b7434ac3d
font_01_sfnt_off0000e58c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE58C 10296 bytes
SHA-256: 883f4e9f562c52e938db013264704bff56b13885e732f6f11d2a4c290f1dfbd7

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