Malicious PDF — malware analysis report

Static analysis result for SHA-256 b06a7eb805ad0ac7…

MALICIOUS

PDF

81.8 KB Created: 2020-12-31 12:49:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 1c0eacf94ecfcc6e49b3a1c39fb1e37b SHA-1: 91714a3530a60086f32165e70232eaf3fc767bc5 SHA-256: b06a7eb805ad0ac77b97cf2d5a3b2e2c1d6f2b6469d2adee4d48ef8a2e02dc46
156 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 multiple heuristics, including ClamAV and an ML classifier, indicating malicious intent. It contains a large number of external links, with one identified as a PDF link farm, suggesting a tactic to manipulate search engine rankings or distribute malicious content. The presence of embedded URLs and the overall structure point towards a phishing or content-distribution scheme.

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=big+face+watches+cheap PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4481676/normal_5fbccddf41456.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365642/normal_5fcf4a5390118.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443357/normal_5fbafd694f849.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415304/normal_5fe75dd9a2ce9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447278/normal_5fc73037ae744.pdfIn PDF document text
    • https://togitarusufojir.weebly.com/uploads/1/3/2/6/132681229/sevetexawelawapuf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454055/normal_5fed2359cbecd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413862/normal_5fe80fe31dd7c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481064/normal_5fa972a1ddbd1.pdfIn PDF document text
    • https://nunezexivu.weebly.com/uploads/1/3/4/4/134440215/4d06a467395f8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365542/normal_5f99f1d0d91e0.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/vapite/25823928110.pdfIn PDF document text
    • https://s3.amazonaws.com/pegek/96306687155.pdfIn PDF document text
    • https://s3.amazonaws.com/zazelujeju/degab.pdfIn PDF document text
    • https://s3.amazonaws.com/pegek/18422594842.pdfIn PDF document text
    • https://s3.amazonaws.com/viwoxuz/aadhaar_card_online_form_fillup.pdfIn PDF document text
    • https://s3.amazonaws.com/pusori/kopowapadixemoz.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_off00010145.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10145 5292 bytes
SHA-256: 43dbedd76242f3aa4f1623db57f67c0216e8b530eaac9b18a6d40c2abc98ef43
font_01_sfnt_off0001136b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1136B 11480 bytes
SHA-256: 1ef12e2db78b0a09542e3e2cf26c8e408086d2e914eccd58d6b3c3ef7431154d

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