Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6917ff3c8994d5c…

MALICIOUS

PDF

63.4 KB Created: 2020-11-13 08:55:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 46cdebb1fc118bbbc711d508eae99775 SHA-1: 4ee1c353e8d3e442ef8e6aa8bf2ba1bb5eae7ff5 SHA-256: d6917ff3c8994d5c305e0beef7456103ae72fac53929e90e6cb0f11f3fb923d8
156 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, exhibiting characteristics of a phishing or SEO link farm attack. The document body, though partially corrupted, suggests a lure related to a 'free baby shower word search template'. The presence of numerous external links, including one pointing to 'trafftec.ru', indicates a likely attempt to redirect users to malicious sites or engage in SEO manipulation. No scripts were extracted, but the PDF structure itself is indicative of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://trafftec.ru/aws?utm_term=free+baby+shower+word+search+template PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366630/normal_5fac225a5fc94.pdfIn PDF document text
    • https://buximinolid.weebly.com/uploads/1/3/1/3/131381316/4518447.pdfIn PDF document text
    • https://xexinujufametu.weebly.com/uploads/1/3/4/5/134502762/8235547.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/kabisebax/canto_es_paciente_camino_neocatecumenal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/269cd206-faf2-4c1e-baf1-6aa1895f07e7/20852883028.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3334eb02-fc72-4cb1-83f5-608c0ab2901e/54471945989.pdfIn PDF document text
    • https://s3.amazonaws.com/wazotojemov/poultney_high_school_vermont.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e90401d-9b8a-42e0-aef6-9eb52a23de4a/ranufimikosuput.pdfIn PDF document text
    • https://s3.amazonaws.com/nonipesikiri/tv_listings_laramie_wy.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/865653c1-12eb-4e4a-b55b-78c9d6400f59/new_orleans_pizza_restaurants.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_off0000bce6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBCE6 5604 bytes
SHA-256: f847190188deec0346380f2cd51c855801082228c34e7305cd4e8f6fd61f579d
font_01_sfnt_off0000cfdc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFDC 9696 bytes
SHA-256: 57e3c02862f52f8dd6fd43f0929c645fe639fd27eab95b6e490a23e93564579e

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