Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0d9286d76d906fc…

MALICIOUS

PDF

67.1 KB Created: 2020-11-26 00:10:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: db065bb6b057b14095223f1d8b50618d SHA-1: 08859f730ea0739a00438a5e03d957bcb0e402bc SHA-256: d0d9286d76d906fcb33e32324b79f29b4ff1ca2d0a6e3f24bb513947cc07eee3
214 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one identified as a known malicious redirector. This suggests the document is designed to lead users to malicious sites, potentially for phishing or malware distribution. The ClamAV detection and ML classifier further support its malicious nature. No scripts were extracted, but the presence of numerous links points to a phishing or link-farming attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ggtraff.ru/123?utm_term=top+pirate+bay+alternatives In PDF document text
    • https://cdn-cms.f-static.net/uploads/4367019/normal_5f99280565582.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411937/normal_5fa0c5461c6b4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426418/normal_5fbe6077384b3.pdfIn PDF document text
    • https://nutolaje.weebly.com/uploads/1/3/4/5/134596366/kuxeg.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367271/normal_5f92c3bff0530.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387417/normal_5f9171ee88f3d.pdfIn PDF document text
    • https://panebafizi.weebly.com/uploads/1/3/4/3/134365464/daburojuteli.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454670/normal_5fa31cf8e2c3e.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/1ea8d384-41ca-4a74-bbaa-fd31f5c3a2ae/wapegovawuvej.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2bad0978-6fa5-456b-9415-b730d7b84442/xelalox.pdfIn PDF document text
    • https://s3.amazonaws.com/tonemakopinibem/clare_county_register_of_deeds_office.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c6e9428f-db58-4ff5-b188-e9796670c064/99334064969.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3974b915-7f90-4dfd-b319-b0e8bf5acc7c/59206191411.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwamoxamo/hard_hidden_pictures_worksheets_printable.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a677f072-6da9-44b1-9efa-62bb2e0e4a1e/84715436562.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5aeed25d-45f9-4551-808f-5be85b226c5f/motomu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b6533930-c11d-429e-82b9-0f77399a5407/gugusaniladexubabe.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_off0000cb7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB7D 5064 bytes
SHA-256: 9d627571eb1de5624a61e3455969599f4360ae95446d05cea926306d03e57865
font_01_sfnt_off0000dcc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCC9 10184 bytes
SHA-256: 2f718684666cc7388948adf8d3631ee28748007d729ba9179b57a34f9c2e6147

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