Malicious PDF — malware analysis report

Static analysis result for SHA-256 08775cd7c5e7952d…

MALICIOUS

PDF

72.1 KB Created: 2021-01-13 06:05:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 2dd2b173984835da7a18d4b99d4699fa SHA-1: cb9b59d2d15ccb0cbd70a5b2fc1334d6d2b9006d SHA-256: 08775cd7c5e7952db408a5c1f945832224ee547686cf7fffb76e7612968b65ce
214 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous links to external resources, with one critical heuristic identifying a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, suggests a lure related to a 'Digimon world championship evolution guide'. The presence of multiple PDF links and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content.

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://traffmen.ru/123?utm_term=digimon+world+championship+evolution+guide In PDF document text
    • https://kuxafedileveniv.weebly.com/uploads/1/3/1/0/131070371/legomeferix.pdfIn PDF document text
    • https://cdn.sqhk.co/godivago/jeqhjpp/14834146480.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488336/normal_5faf9c3be2673.pdfIn PDF document text
    • https://cdn.sqhk.co/gisatajofo/fmjafTz/319778322.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426690/normal_5fe5586658ca2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421614/normal_5feeba34062be.pdfIn PDF document text
    • https://cdn.sqhk.co/jumupebuvi/gj26qvL/fosogukibidesaxusixizifev.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383450/normal_5fd698e8cba00.pdfIn PDF document text
    • https://baresifesej.weebly.com/uploads/1/3/4/1/134131831/beaae5e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494147/normal_5fd2ec4c519f7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443821/normal_5fd63291afaa2.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/lorifumofelu/tricky_math_education.pdfIn PDF document text
    • https://s3.amazonaws.com/wovitiku/axa_participating_fund_performance.pdfIn PDF document text
    • https://s3.amazonaws.com/wopari/fakubitowoxom.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_off0000da60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA60 5640 bytes
SHA-256: 2b6bb3b2e0e19349cff0d1245ee36d736b5ebb986c78d142980c16872b15057a
font_01_sfnt_off0000ed7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED7A 11496 bytes
SHA-256: 30ed96214d707db4deaa4660abba4cc986ef43db3de4c4a7a6dad2c32ed0ebbc

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