Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb2264c280cd4f43…

MALICIOUS

PDF

81.8 KB Created: 2020-11-24 10:07:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 37df4e71ba998065a6ff7c0b20799f54 SHA-1: dba4af09580cbeab54141e0e02ed603ac066adf6 SHA-256: fb2264c280cd4f43e10a98b09c856724f8b5371c78524a8a8942300af72acabe
156 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 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://traffnew.ru/strik?utm_term=dr+gundry+diet+evolution+pdf+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4490129/normal_5fa9b216a6e66.pdfIn PDF document text
    • https://wobusaxumezi.weebly.com/uploads/1/3/4/8/134881220/2197883.pdfIn PDF document text
    • https://gaxopekel.weebly.com/uploads/1/3/0/9/130969853/papefokimofuje.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464311/normal_5fad84055ae8b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383930/normal_5f9837fc90f54.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/tekujel/frontier_mail_yahoo_sign_in.pdfIn PDF document text
    • https://s3.amazonaws.com/kakekojezutok/96044148424.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/760dfc84-e5a0-4b5a-a33a-2ab17d3d5685/48349475753.pdfIn PDF document text
    • https://s3.amazonaws.com/jebupofedijakuk/boyakonda_gangamma_telugu_songs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/83400883-3185-4a61-9a0d-290ae51f5714/antman_and_wasp_ending.pdfIn PDF document text
    • https://s3.amazonaws.com/takebemanijewok/28972705834.pdfIn PDF document text
    • https://s3.amazonaws.com/zukukelejurotef/amor_y_respeto_seminario.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/kewewanaso.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_off000103f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103F2 5284 bytes
SHA-256: f3c406dfb4f3c1928cf26387c55596a8a03eb5e8aeabbb27b1088e0c29d91904
font_01_sfnt_off00011620.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11620 10676 bytes
SHA-256: 36ed7d692a6fff5b9272d80bc5a6280550e67e9e3da59ae3a0dc66801889fdb8

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