Malicious PDF — malware analysis report

Static analysis result for SHA-256 065cbd74b8e41d72…

MALICIOUS

PDF

73.1 KB Created: 2021-06-06 02:08:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 805bdef2b9efd2c2bb18ecf22a60431e SHA-1: e4ea974b49a0653d4accbeecc2ba4660b574d53a SHA-256: 065cbd74b8e41d7265d6b2883b7cb6dbe02b53d084b3654387e44f37118ab809
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, with one prominent URL pointing to a site offering movie downloads, suggesting a lure to entice users to click and potentially download further malicious content. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a large number of links on disposable hosting, reinforcing the malicious intent.

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 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://crewmak.ru/pbw?utm_term=jarhead+3+full+movie+download+in+hindi+dubbed+filmyzilla PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4369926/normal_5fc768be1830e.pdfIn PDF document text
    • https://bijazebis.weebly.com/uploads/1/3/1/3/131382141/tegezu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470014/normal_5fd6e57a460f7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417429/normal_602492920f972.pdfIn PDF document text
    • https://xuwirebusupedun.weebly.com/uploads/1/3/4/3/134379604/9897799.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490128/normal_5fe5ed7802e23.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491168/normal_601f3be36e2e2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4493876/normal_5ffade111af91.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391319/normal_604acb87f1f50.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wenuveraroto.pbworks.com/f/nitadusube.pdfIn PDF document text
    • http://tereburokofe.pbworks.com/w/file/fetch/144504690/vabafumetoropeperakuvam.pdfIn PDF document text
    • http://sokulus.pbworks.com/w/file/fetch/144692517/botumitividazefijuvatexe.pdfIn PDF document text
    • http://kepigiwup.pbworks.com/f/how_many_types_of_adjectives_are.pdfIn PDF document text
    • http://jolunatimavu.pbworks.com/f/63062395282.pdfIn PDF document text
    • http://rukuvekuke.pbworks.com/w/file/fetch/144663456/the_monkey_king_1_english_version.pdfIn PDF document text
    • http://zufiwuz.pbworks.com/w/file/fetch/144447414/spiritualism_and_necromancy.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_off0000dfe2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFE2 5564 bytes
SHA-256: 4e2c1b2baae57a39ae4a36a5e71a528a5c686726b5b332b4de97ffe602ed7cdd
font_01_sfnt_off0000f2ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2CA 10660 bytes
SHA-256: 38d127cd674ab5fef1c81f0e2a127325b79c18abfc91a5c178bcd5c62806e09e

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