Malicious PDF — malware analysis report

Static analysis result for SHA-256 7539a8732a469027…

MALICIOUS

PDF

75.6 KB Created: 2021-05-08 05:23:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 1128a8f8e6ba0336eb5bd12a9504684f SHA-1: 2a4fd2f96d8cd80a09eda2a0a93026be2448133e SHA-256: 7539a8732a46902736d2e2ad3bdd30865651752f0cfd15403a6223614124df85
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable domains, and a heuristic identified it as a link farm designed for SEO manipulation. The primary URL, disguised as a search result for 'Burger King near me home delivery', strongly suggests a phishing or malicious redirection attempt. While no scripts were explicitly extracted, the PDF structure and URL patterns are indicative of a malicious document designed to trick users into visiting a compromised site.

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 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://baarspo.ru/strik?utm_term=burger+king+near+me+home+delivery PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4378383/normal_600bab1a1cebe.pdfIn PDF document text
    • https://rizomoxus.weebly.com/uploads/1/3/4/5/134589692/625048.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423732/normal_60139fdf0ed5e.pdfIn PDF document text
    • http://zeludupixejufi.medianewsonline.com/18064091450.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403141/normal_5fcd55ca7607b.pdfIn PDF document text
    • http://lezigovedavide.getenjoyment.net/nasb_macarthur_study_bible_2nd_edition_premium_goatskin_leather.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404502/normal_6056b54cb775a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380083/normal_60481b99ed868.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368242/normal_5fc888c09ea86.pdfIn PDF document text
    • https://dibexawalezi.weebly.com/uploads/1/3/4/7/134760597/sanupoduw.pdfIn PDF document text
    • https://logekififej.weebly.com/uploads/1/3/4/5/134502341/1987933.pdfIn PDF document text
    • http://morasuxod.getenjoyment.net/mejulegapiligugofoz.pdfIn PDF document text
    • http://nepatokada.mypressonline.com/gomevimazeg.pdfIn PDF document text
    • https://xibigulekin.weebly.com/uploads/1/3/0/9/130968960/da1e21778.pdfIn PDF document text
    • https://daletutanedura.weebly.com/uploads/1/3/1/6/131636587/dofipudumujumuxik.pdfIn PDF document text
    • https://berapozi.weebly.com/uploads/1/3/0/7/130776213/ba5a7.pdfIn PDF document text
    • https://wolafufep.weebly.com/uploads/1/3/5/3/135305459/1023848.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/tuxenipup/gorol.pdfIn PDF document text
    • https://s3.amazonaws.com/pivetuzadujo/mejirerokufiwubuf.pdfIn PDF document text
    • https://s3.amazonaws.com/zafijukopa/bakun.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000db76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB76 5140 bytes
SHA-256: 2ffe6aac445184c24b318312ebd75efd640b398504a60e55683f14e0fd0ff6b1
font_01_sfnt_off0000ecc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECC2 11684 bytes
SHA-256: 80cc52207a990a00310c9a32c2de5cc26534574b4bc3afc3eb9a547f08524cc8
font_02_sfnt_off0001137a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1137A 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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