Malicious PDF — malware analysis report

Static analysis result for SHA-256 bcc12c47762014dc…

MALICIOUS

PDF

77.2 KB Created: 2021-02-11 07:32:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 6d441b67f23037facba406498365ab40 SHA-1: 36266221ecd00b1906f44e999deafd6c26e82f35 SHA-256: bcc12c47762014dcd32e80d6b673e6dfa317e163dca99f90c784189c7e7878e8
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous embedded URLs pointing to disposable domains, indicative of a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URIs are consistent with techniques used to deliver second-stage payloads.

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
  • 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://jottigo.ru/123?utm_term=all+aboard+games+1822 PDF link annotation
    • http://frasqen.online/gatejuzevexevo6jb43.pdfIn PDF document text
    • http://milanbeach.fun/73102366998ysmuk.pdfIn PDF document text
    • http://gogotmif.space/xenoblade_gecko_codes4w4r3.pdfIn PDF document text
    • https://xevibobi.weebly.com/uploads/1/3/4/6/134683071/pulobogewugozivuvodi.pdfIn PDF document text
    • http://bobr.space/33350732350ilczw.pdfIn PDF document text
    • https://zupuluduwiwafop.weebly.com/uploads/1/3/2/6/132681460/8920170.pdfIn PDF document text
    • https://sujofunipus.weebly.com/uploads/1/3/4/5/134502209/2194014.pdfIn PDF document text
    • http://guromufupadaf.iblogger.org/34952240467.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382965/normal_5fcbde77e589a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pumamolo.rf.gd/hypercholesterolemia_treatment_guideline.pdfIn PDF document text
    • http://fazesiviwor.rf.gd/87035010183.pdfIn PDF document text
    • http://tujukiji.rf.gd/retrica_camera_app_free.pdfIn PDF document text
    • http://xedaripa.epizy.com/photogrammetry_book.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_off0000eef2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEF2 5652 bytes
SHA-256: 1c8d81c12afe2c44a4f96a602f07376e5127c20da15ab29219614ac9cb708290
font_01_sfnt_off00010214.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10214 11128 bytes
SHA-256: 4845735b181011d261b9ca1113ea6391b195bd6a94821b761defac93ad3f6a8d

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