Malicious PDF — malware analysis report

Static analysis result for SHA-256 9665ffee358f33b7…

MALICIOUS

PDF

71.7 KB Created: 2020-11-16 20:48:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 237294d864364103c8aa86bc688bd434 SHA-1: 1b9f381e384957a1456446c317b3fc3cfb4c03f0 SHA-256: 9665ffee358f33b710b447b44ad52ec0f18b18cd3cc2ca2d3ab81a93590d1c0f
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious. It contains a large number of external links, suggesting a link farm or phishing attempt. The primary URL, 'https://trafffe.ru/strik?utm_term=own+the+day+own+your+life+audiobook', is likely used to redirect users to malicious content. No scripts were extracted, but the PDF structure and numerous external links indicate a malicious intent to redirect users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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=own+the+day+own+your+life+audiobook PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4383678/normal_5fa0446ebb6c2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419003/normal_5fa40fea82c29.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375356/normal_5fa44f5bd2dbc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366346/normal_5faf117830fbd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383149/normal_5f9269f25d4b9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366408/normal_5f88a2aa22fa3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411001/normal_5fa9df5c1bf29.pdfIn PDF document text
    • https://zozolesib.weebly.com/uploads/1/3/4/6/134631165/mibazumuli-mokelorid.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424013/normal_5f9d945ea6b63.pdfIn PDF document text
    • https://sefusozikoju.weebly.com/uploads/1/3/4/3/134366316/vaburefuvexuve-tumizesalulow-bevimumutu-wipomevaz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391921/normal_5f9cac14880a7.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/d9574faa-2676-4a0b-a0b4-81375054f643/mimar_sinan_slayt.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_off0000dcdd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCDD 5244 bytes
SHA-256: eac2952583d4fe9fa04dedda6ac23776ddcbb4fcde2ea4b6f0bfdaeffb63c913
font_01_sfnt_off0000eebf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEBF 10168 bytes
SHA-256: 183dc078b1e3a4b9de78c9dca78dc1eba56f061c2b82c13a92cb62390a9903c6

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