Malicious PDF — malware analysis report

Static analysis result for SHA-256 1432580ce9316e8d…

MALICIOUS

PDF

64.3 KB Created: 2020-12-06 11:20:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 18ccf48a455095095d2fd2275bdc0304 SHA-1: bbb9fdbeec2982e7214772fb69b4f5d31c3142f5 SHA-256: 1432580ce9316e8d620bb98db5977829b165ca167790f947a6b4b1e63ee9857a
214 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file is identified as malicious due to its function as a redirector to known malicious infrastructure and its inclusion of a large number of external links, likely for SEO manipulation or phishing. The embedded links, such as https://cctraff.ru/123?utm_term=carefree+awning+parts+diagram, are designed to lead users to potentially harmful websites. The file's structure and content suggest it is part of a phishing or malicious redirection campaign.

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
  • 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://cctraff.ru/123?utm_term=carefree+awning+parts+diagram In PDF document text
    • https://cdn-cms.f-static.net/uploads/4368984/normal_5fadf9d3d66b7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465555/normal_5fa36938cba78.pdfIn PDF document text
    • https://xemawegomefere.weebly.com/uploads/1/3/4/7/134736207/6619136.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379601/normal_5f8dd7a41f027.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383470/normal_5fc49553794f6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383452/normal_5f92315123676.pdfIn PDF document text
    • https://sanuvexugivi.weebly.com/uploads/1/3/1/6/131606490/1ba5b8875e3465.pdfIn PDF document text
    • https://soguleta.weebly.com/uploads/1/3/4/3/134305846/b8231f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406456/normal_5fad4d5979f2f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408471/normal_5faac3991f9bf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000bfdb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFDB 5328 bytes
SHA-256: 5d3b006878f206378b8b573f6242db0e19762cf669cedb6bee931089e0c66db0
font_01_sfnt_off0000d1f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1F7 10156 bytes
SHA-256: 62238c4e63c231460b30faa4e11afe3dc9eabf017aff9d120f8ff464f036f99c

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