Malicious PDF — malware analysis report

Static analysis result for SHA-256 04790dc1892bcf1c…

MALICIOUS

PDF

69.3 KB Created: 2020-11-09 19:04:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: ddfac63d79981c46d0794f1a63a059fe SHA-1: 2fef221f4c3b8869059014108755322cf01f25e5 SHA-256: 04790dc1892bcf1c1184b493cb3507b90b3f520967aff12dc26471c4c9cf2abd
164 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 and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/strik?keyword=adm+pro+apk PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4461232/normal_5fa6aa17e49e4.pdfIn PDF document text
    • https://dudabiwik.weebly.com/uploads/1/3/4/3/134354119/9513262.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368975/normal_5f8bba4b8b9c8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424647/normal_5f9da2005315b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368747/normal_5f9cb92004bee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371814/normal_5f88a4298c08e.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/filosom-lusiwikafese-jerupuxorukoti-novubolifunuw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386087/normal_5f9aa9ee58489.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407062/normal_5fa723eac4586.pdfIn PDF document text
    • https://gusumadanu.weebly.com/uploads/1/3/2/6/132695601/4573418.pdfIn PDF document text
    • https://pareropifu.weebly.com/uploads/1/3/4/3/134349273/d3a2daf0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369519/normal_5fa3e6eb12afd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410441/normal_5f9724cc92e10.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cbdd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBDD 4948 bytes
SHA-256: 18812cec5220f8e2d540dfd6583e122935e016b112e5bf5c9d10eb9c5cf70a7e
font_01_sfnt_off0000dc92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC92 1796 bytes
SHA-256: 68bbe42c93759ab90c218695aa25c1747b40456063d11b0ac06b51d2514fd3e6
font_02_sfnt_off0000e51d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE51D 10468 bytes
SHA-256: 89f5e50af33c53369b6387c25bc9f7a04a57c9828d485a22d2978afa5ecca90f

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