Malicious PDF — malware analysis report

Static analysis result for SHA-256 531551663cd7690a…

MALICIOUS

PDF

50.6 KB Created: 2021-02-10 19:23:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 098a67a1b8aee39ea91d7db3c781d1bd SHA-1: 4945353126d7019e75b3935bf1f311b2fea086ca SHA-256: 531551663cd7690aa7e716bde6dd00d082762ae928d98385b87674a4de34512e
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

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 0.9443

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://crophysi.ru/aws?utm_term=free+church+newsletter+templates+microsoft+word PDF link annotation
    • http://easterthjg.com/danodakzrhy7.pdfIn PDF document text
    • http://twenty-promo2020.ru/ritikubaxukoxesexusobozdhgq7.pdfIn PDF document text
    • http://ibkreactiva2020.com/miraculous_ladybug_season_2_english_dubaw0l7.pdfIn PDF document text
    • http://ogranicbio.space/karakai_jouzu_no_moto_takagi-_san7vbdk.pdfIn PDF document text
    • http://metoduzudo.rf.gd/information_technology_consultant_cover_letter.pdfIn PDF document text
    • https://s3.amazonaws.com/turip/adobe_acrobat_reader_full_version_apk.pdfIn PDF document text
    • http://bulujulu.rf.gd/cariotipo_humano.pdfIn PDF document text
    • http://dabirojab.rf.gd/63066614381.pdfIn PDF document text
    • http://pagiwufuvefukuf.epizy.com/bhavesh_joshi_superhero_movie_mp4.pdfIn PDF document text
    • https://s3.amazonaws.com/degagaziv/66583432168.pdfIn PDF document text
    • http://bilozepe.rf.gd/xetonotipapa.pdfIn PDF document text
    • http://xofafatererowu.rf.gd/razuwotuxuzokovujo.pdfIn PDF document text
    • http://fubegamo.epizy.com/biometric_device_driver.pdfIn PDF document text
    • http://zezajezo.epizy.com/vebivelavaxadizaje.pdfIn PDF document text
    • https://s3.amazonaws.com/jepavilutabilel/gba_emulator_games_for_android_cheats.pdfIn PDF document text

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