Malicious PDF — malware analysis report

Static analysis result for SHA-256 96a624028b9c30f3…

MALICIOUS

PDF

78.1 KB Created: 2021-02-16 07:42:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 178b43bd58123e6d61d2fc769fc776cc SHA-1: d8c56aa11ac82dd355c0ea627a5bdee6b96d3069 SHA-256: 96a624028b9c30f34b6ce4431c39815f7bf6eda0f0320217bebe916428894025
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs pointing to disposable domains and link farms, indicating a likely attempt to redirect users to malicious sites. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' strongly suggests this is a link farm designed for SEO manipulation or to host phishing content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://druttle.ru/123?utm_term=toro+power+clear+snowblower+will+not+start PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4379846/normal_60173c568c984.pdfIn PDF document text
    • https://dodonixufaf.weebly.com/uploads/1/3/1/4/131453867/voxolirunuseva.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407562/normal_601a2787bcb83.pdfIn PDF document text
    • https://cdn.sqhk.co/folamudoj/c2gj9hi/gavosabasorazugijexiwidij.pdfIn PDF document text
    • https://cdn.sqhk.co/vagekoxes/NeAhcjc/granny_pods_cost_uk.pdfIn PDF document text
    • https://cdn.sqhk.co/dadirowuj/ijTifyC/zafazagiw.pdfIn PDF document text
    • http://tronreserve.online/69297935991s8u95.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419836/normal_600de51908e1f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369524/normal_6002e01e6afa6.pdfIn PDF document text
    • https://mobejameraxoluv.weebly.com/uploads/1/3/5/3/135316129/5445173.pdfIn PDF document text
    • https://bezijenogekise.weebly.com/uploads/1/3/4/8/134875893/8c415bd552596b4.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/werowibovezoje/finajisobijewa.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f5f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5F4 5108 bytes
SHA-256: cf9e4b803e41d63ad1f1034faa15c00138bc922a69b4542932c9e12a6a5f1d67
font_01_sfnt_off00010770.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10770 10608 bytes
SHA-256: 7f96765e81a8c52697020d8073b0c91f00ddf72732281366bd9260e23ce7617a

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