Malicious PDF — malware analysis report

Static analysis result for SHA-256 963d73ad0b13e9a7…

MALICIOUS

PDF

75.8 KB Created: 2021-01-14 03:39:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: f5cfa4e7dcb784f82d725dd64b469d4d SHA-1: afe559a817fedfabec42b9b4eddabb898c57bdf7 SHA-256: 963d73ad0b13e9a79f06cd81172e9e9f5a2239c04bf62e3186172f1bb0fe4c88
156 Risk Score

Malware Insights

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

The PDF contains multiple external links, including one to 'traffset.ru' which is flagged as a potential link farm. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or distributing further malware. Although no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://traffset.ru/wb?keyword=fall%20guys%20wallpaper%20hd PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4380705/normal_5fbadf00bec0f.pdfIn PDF document text
    • https://muruvarulem.weebly.com/uploads/1/3/1/4/131406835/3f2e5b2b61c2.pdfIn PDF document text
    • https://site-1201164.mozfiles.com/files/1201164/eikon_messenger_for_mac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415073/normal_5fd7c15465a55.pdfIn PDF document text
    • https://site-1168306.mozfiles.com/files/1168306/aahar_2018_exhibitor_list.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405193/normal_5f96a181e3085.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479470/normal_5fc7452322318.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448547/normal_5fd6255c1b7e3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/kezemiradigu/danger_close_parents_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/libowebujakux/illustrator_template_scientific_poster.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e0f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0F1 4908 bytes
SHA-256: 456226f9e10d1b7e9c38e78adbb6b555a9984305dc99ae793637cb0fb6deda83
font_01_sfnt_off0000f1ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1CA 10196 bytes
SHA-256: 76f2fad778712860687f31593e9316b2d4f2df5c06aa828f125c08c216157b94
font_02_sfnt_off000114a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114A7 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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