Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8725ba6ff48024e…

MALICIOUS

PDF

67.2 KB Created: 2021-04-03 03:46:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 0d1363e6abb55ecb0f05c90dc5372953 SHA-1: 1bdaabb39091e99c474e547b708a023c5931bb22 SHA-256: e8725ba6ff48024e2738708e2af659f58ffa6c90055cadf4d3425d1b29f5a02c
124 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, indicating it contains malicious content. The PDF contains numerous embedded URLs pointing to various domains, with a heuristic specifically flagging it as a link farm on disposable hosting. This suggests the primary purpose is to direct users to potentially harmful external resources, possibly for SEO abuse or further malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8607

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 http://jushq.club/lart_de_la_guerre_sun_tzu_fnac6ayu8.pdf In PDF document text
    • http://munivujikax.22web.org/electronics_projects_magazine_free_download.pdfIn PDF document text
    • http://lnstagramverifiedsbadgeform.com/nixiwojojamatudaxamev2hv.pdfIn PDF document text
    • https://joxobupapi.weebly.com/uploads/1/3/1/4/131454586/tavidulufozinezon.pdfIn PDF document text
    • http://bitsracing.net/befixuvoxutesafu6q747.pdfIn PDF document text
    • http://kemytbok.xyz/rugamufopujukubivarutugzmpvn.pdfIn PDF document text
    • http://gogotmif.space/side_by_side_english_book_1panvd.pdfIn PDF document text
    • http://itali-big.space/ballerina_dancing_dream_meaning16g7y.pdfIn PDF document text
    • https://wuvalarovujed.weebly.com/uploads/1/3/4/2/134266489/tezurisosoted-rufoselafukejed.pdfIn PDF document text
    • http://noncomform.space/cursos_de_primeros_auxilios_lima_2020z6t4c.pdfIn PDF document text
    • http://changepass.online/ukulele_strumming_patterns_4_4d4fg6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://feedproxy.google.com/~r/wb/ENAH/~3/jJyWpsOf3IE/wb?keyword=what%20is%20the%20overall%20theme%20in%201984PDF link annotation
    • http://wupuwijekoja.rf.gd/computer_science_book.pdfIn PDF document text
    • http://kenuzuwemonuda.epizy.com/social_learning_theory_definition_and_examples.pdfIn PDF document text
    • http://jizemefuzix.epizy.com/wajosuluwomefog.pdfIn PDF document text
    • http://nitukerisoz.rf.gd/riwaxarosewaponenale.pdfIn PDF document text
    • http://xijivip.rf.gd/59574283990.pdfIn PDF document text
    • http://dunugamufaj.epizy.com/6214276907.pdfIn PDF document text
    • http://jufonerazulo.rf.gd/7095413581.pdfIn PDF document text
    • http://vaguxaza.epizy.com/fasting_for_spiritual_breakthrough.pdfIn PDF document text
    • http://difavaxegugadu.epizy.com/ragnarok_eternal_devil_wing_quest_guide.pdfIn PDF document text
    • http://joretewad.epizy.com/fugemetixozozewo.pdfIn PDF document text
    • http://lozisuvuxinosog.epizy.com/android_tablet_screen_rotation_not_working.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fc2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC2F 5488 bytes
SHA-256: be3827dee56093ec2db026b2d50db2eaee8b1f048a24f904eaae851cd52fbf91

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