Malicious PDF — malware analysis report

Static analysis result for SHA-256 f724bf225af9d373…

MALICIOUS

PDF

63.1 KB Created: 2020-12-27 13:14:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: b0717dbbcbddf747ead309f29c4b041f SHA-1: 840fdee479242e41d508a951f5fbd69b1a8f48a2 SHA-256: f724bf225af9d3737136f5948e4a80c978e037a1d4627ce596d40d5c4111d106
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, with the primary URL being trafficked to a suspicious domain. This suggests an attempt to manipulate search engine results or direct users to malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution.

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/strik?utm_term=tile+shops+near+me+open+today PDF link annotation
    • https://cdn.sqhk.co/jizejotuwoz/diajcgj/fitoledodomalinasaloxowaj.pdfIn PDF document text
    • https://cdn.sqhk.co/miwataxanis/jbgi1M1/40315808575.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375700/normal_5f8a2f2994847.pdfIn PDF document text
    • https://cdn.sqhk.co/zezoxomop/ja7Thic/vabifadeturodagoja.pdfIn PDF document text
    • https://wezenazuzive.weebly.com/uploads/1/3/4/7/134764498/3653886.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473384/normal_5fc12ff5bf2d8.pdfIn PDF document text
    • https://cdn.sqhk.co/wuvupalib/U17xrLl/57813362265.pdfIn PDF document text
    • https://cdn.sqhk.co/vipabumumiw/hacGhf8/warufurejeporevoko.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/sugosubexez/gun_hill_depot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8224f73f-a53b-4503-a34d-035c79f7c76a/dowugetidevuziwonineduzex.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae570a8c-0a3e-4421-905f-ba7ca1ae6d7c/dark_sword_2_mod_apk_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/xotomisen/free_carroll_diagram_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/dokofejijevuxemijolajeb.pdfIn PDF document text
    • https://s3.amazonaws.com/zifozujiwi/sonex_sanitary_fittings_price_list.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

Related samples 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bcf8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBCF8 5248 bytes
SHA-256: cef0b78a0f7cd23387563d0bdc92e6a94f529a0b984344b35569e4ccd384073a
font_01_sfnt_off0000cea8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEA8 9740 bytes
SHA-256: 0254f6e46b6c53b50943fb0e1736893e45f890fd96cc8fd61993efcf50631e17

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