Malicious PDF — malware analysis report

Static analysis result for SHA-256 9338a73e190cc663…

MALICIOUS

PDF

79.0 KB Created: 2021-03-15 22:43:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: b23ba941972e26677f63cfabb647865d SHA-1: c88b97270111170da1a195d8c65f0594de5ff3da SHA-256: 9338a73e190cc663e90a0826eb02e5664458a4949b178bbe93c708c5ac2c0c84
94 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous embedded URLs, many pointing to disposable domains, and is flagged as a link farm. The ClamAV heuristic identifies it as 'Pdf.Phishing.Trojan', indicating malicious intent. The document body, though heavily obfuscated, contains text related to a Samsung Galaxy Note 4 battery issue, suggesting a lure to trick users into clicking malicious links.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4774

Heuristics 4

  • 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
  • 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://kuzutuzo.ru/strik?utm_term=samsung+galaxy+note+4+battery+not+holding+charge PDF link annotation
    • http://renavakurexiroz.22web.org/what_is_sagamore_plus.pdfIn PDF document text
    • http://bionatur.space/jirefikevawake072ot.pdfIn PDF document text
    • https://sabopedawexidix.weebly.com/uploads/1/3/4/3/134305122/zolove-ranetul-rikakokol-suboza.pdfIn PDF document text
    • https://buwavazazaradig.weebly.com/uploads/1/3/3/9/133999961/b788e9c8af391b9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366009/normal_601d188cd4b38.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388165/normal_6002dd17c9893.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459463/normal_6038d392b9d8f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408330/normal_5fe56aebef3fb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418963/normal_60003c98d3411.pdfIn PDF document text
    • http://sdfafq.info/sunbeam_electric_blanket_controlleraj6el.pdfIn PDF document text
    • http://cybety.xyz/mowomh38km.pdfIn PDF document text
    • http://gerda-msk.ru/who_made_the_moon_song22y5g.pdfIn PDF document text
    • http://pezedavepajizum.rf.gd/pitisifisirevunolafora.pdfIn PDF document text
    • https://s3.amazonaws.com/xeponodij/27452440332.pdfIn PDF document text
    • https://s3.amazonaws.com/dorulusof/81573194684.pdfIn PDF document text
    • https://s3.amazonaws.com/zoromexemuzid/39826900045.pdfIn PDF document text
    • https://s3.amazonaws.com/gofiguj/vasovagal_syncope_patient_information.pdfIn PDF document text
    • https://s3.amazonaws.com/gofiguj/samsung_bd-j5100_remote_not_working.pdfIn PDF document text
    • https://76c9fb28-c10e-4950-85be-37de24a2ede8.filesusr.com/ugd/fa32a6_df9bf34906d84c42a9e009c898d791de.pdf?index=trueIn PDF document text
    • https://2c9641c8-5874-4869-9b94-f1378e60aa6b.filesusr.com/ugd/efc1f6_f4dac8ce765c471f8a96140fc2175ffa.pdf?index=trueIn PDF document text
    • http://fusiditato.epizy.com/joxule.pdfIn PDF document text
    • http://genaligonunik.epizy.com/6362002903.pdfIn PDF document text
    • https://4ec63ec4-77bf-4499-900e-7c522af20654.filesusr.com/ugd/35bdb9_ce3fa93aa8b64187bc8a8cc84ab886d3.pdf?index=trueIn PDF document text
    • http://fuzimobikuxuta.epizy.com/29036897666.pdfIn PDF document text

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