Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a34d326f9f09b5c…

MALICIOUS

PDF

74.3 KB Created: 2021-01-17 08:14:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 32656c1d735ec97d620d0888c5e02c36 SHA-1: c6312de55fd69affefe2d1ce50d402cb5ecf080a SHA-256: 1a34d326f9f09b5cc809bbed3d214a064575029f3355deea077da56c7f8a670d
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a large number of external links, identified as a link farm, suggesting a malicious intent to redirect users to potentially harmful websites. The ClamAV detection and ML classifier strongly indicate malicious content, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and extensive external linking are indicative of malicious activity.

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://trafftec.ru/123?utm_term=pokemon+stadium+2+gym+guide PDF link annotation
    • https://nabesoke.weebly.com/uploads/1/3/4/0/134042749/b6cee25.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464077/normal_5fab99d679373.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401559/normal_5f94f5e440136.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427544/normal_5fc0cf38d565c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470960/normal_5ff4965c9d516.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384046/normal_5f9ccced12970.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367302/normal_5f87b4e5e046b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421051/normal_5fadf20bb9c28.pdfIn PDF document text
    • https://cdn.sqhk.co/zixemoliz/ighfUqu/dolelexisefesas.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410678/normal_5fb02496a1a62.pdfIn PDF document text
    • https://cdn.sqhk.co/nuroteditu/c4eirij/crash_cart_meds.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417818/normal_5fc407b4c5544.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408599/normal_5faf11cd52f30.pdfIn PDF document text
    • https://bobilemako.weebly.com/uploads/1/3/4/7/134733435/49b00.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_off0000e60e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE60E 5316 bytes
SHA-256: ab3953584d026a1d63f306db542168b1219052fa405308a6a20c7ddc91e0f6c4
font_01_sfnt_off0000f825.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF825 10676 bytes
SHA-256: ebc3e5f1b7eeb8ec55b6e6b935c6d215a8ab3f4ecefa032dd54fa45ac249b4cd

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