Malicious PDF — malware analysis report

Static analysis result for SHA-256 f913cc2bca234239…

MALICIOUS

PDF

69.2 KB Created: 2020-12-17 04:42:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 619086d7bfe1546762ef595177a04589 SHA-1: e2a7278d71fac7016e66c0173ab3c113d33d57a4 SHA-256: f913cc2bca234239e42e67929fd5043fa5af6e0c0cdb2c524e36a9ae962ab548
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged as malicious by multiple heuristics and an ML classifier, indicating a phishing or trojan payload. The document body contains a URL, 'https://traffnew.ru/strik?utm_term=bank+of+the+james+bedford+va', which is likely intended to redirect the user to a malicious site. The PDF also contains a large number of external links, suggesting a link farm or a mechanism to distribute further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffnew.ru/strik?utm_term=bank+of+the+james+bedford+va PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4501479/normal_5fbcb38c9b4ea.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452607/normal_5fd33414c32bd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463543/normal_5fb47a9183b92.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490523/normal_5fd04521acc66.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404733/normal_5f93b82a8431c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412388/normal_5f95fcbf551c8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374857/normal_5f8a42abee041.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/lukuxaluk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387243/normal_5f9c7b0672533.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388178/normal_5fbf159cc5368.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378393/normal_5fbc62e9d7001.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419191/normal_5fb539c1b8a5d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373986/normal_5faeaa9b48718.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/lixuzo/blue_hell_gta.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_off0000cbb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBB4 5504 bytes
SHA-256: d9f5d2198fb740a1e007f514ae85d5a445adb628b82020bda1ba61b6eb354a17
font_01_sfnt_off0000de4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE4E 11748 bytes
SHA-256: 8c93741561cb4eb83d73f4c7bb5cd69e57067e2dc19695c0e9316f6c94707107

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