Malicious PDF — malware analysis report

Static analysis result for SHA-256 eda79e5678c197da…

MALICIOUS

PDF

68.4 KB Created: 2021-02-17 02:58:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: b0834eb9fbab51ccea1836a115cd179b SHA-1: 597ff57da9966ebe0eb4974f215aca324114aa5a SHA-256: eda79e5678c197dae658663c33d5a48637b223ccdb53829985ab8d0acd5b444b
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • 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://maypoin.ru/aws?utm_term=big+little+lies+male+cast+season+2+review PDF link annotation
    • http://shoop-fn.ru/jefizasudopezejeloj0lyi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385422/normal_5fd288c7aa575.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369916/normal_602c2dc16ec5a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375080/normal_5fdf7a5ebca9b.pdfIn PDF document text
    • https://cdn.sqhk.co/zokasejiz/qjaifeZ/gizowumuziveluguwokumeve.pdfIn PDF document text
    • https://zeteleginogegop.weebly.com/uploads/1/3/4/5/134526156/bd48ac20ea1830e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370762/normal_5fdc6f341072b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480423/normal_602c0ffbd502e.pdfIn PDF document text
    • http://present-mag.ru/469096361849df16.pdfIn PDF document text
    • https://dipilewojariwu.weebly.com/uploads/1/3/2/8/132814651/5699832.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/nupotukig/google_chrome_for_pc_offline.pdfIn PDF document text
    • https://s3.amazonaws.com/nagudo/tafil.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_off0000ce17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE17 5452 bytes
SHA-256: 701fceee7077df600a3d74d420ab3fd255aac54f994601b2fa584e56ae6acdcb
font_01_sfnt_off0000e0a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0A4 10804 bytes
SHA-256: b135c226d7700103b6463b98b0ee5e9ab45be635edc48f83293fe6397bc4fe6f

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