Malicious PDF — malware analysis report

Static analysis result for SHA-256 72c026b418af2741…

MALICIOUS

PDF

75.6 KB Created: 2021-02-07 20:31:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 760faa84cd7a4910f5a27f0d5d501383 SHA-1: a5110607c4f22bbfe1df7da88332462081d958f6 SHA-256: 72c026b418af274139f62470f7f5a47181cb8953d2ac3809485f1fabf212d795
124 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 is flagged as a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The presence of external URIs and the link farm heuristic suggest the document's primary purpose is to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8286

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 https://baarspo.ru/aws?utm_term=alage+alage+song++in+masstamilan PDF link annotation
    • http://vivadoctor.ru/xenolatizomujuxufenomo2hrhn.pdfIn PDF document text
    • http://chatik85939775.fun/zevakitizijononuzibugalijonulg.pdfIn PDF document text
    • http://ipatovaalena.ru/snes_classic_japan_game_listb505m.pdfIn PDF document text
    • https://cdn.sqhk.co/virurewev/ieVnhi5/word_cookies_2_apple_9.pdfIn PDF document text
    • http://raladotid.22web.org/extrajudicial_killings_news_report.pdfIn PDF document text
    • http://winoraama.space/the_space_program_a_tribe_called_quest_meaningq7wq4.pdfIn PDF document text
    • https://cdn.sqhk.co/wezupobuwab/fuhfhhE/monesuletoz.pdfIn PDF document text
    • https://cdn.sqhk.co/gezefesete/OIzgjZx/62240561837.pdfIn PDF document text
    • http://crysety.xyz/monthly_calendar_template_2018_freex2s1d.pdfIn PDF document text
    • http://bcpreactiva-enlinea.com/pekedirisapidoga0oqn6.pdfIn PDF document text
    • http://pribor-poverka.site/rituals_and_spells_of_santeriavize2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://dojidusajotat.epizy.com/98782736018.pdfIn PDF document text
    • https://s3.amazonaws.com/sifawekujiki/basil_valentine_azoth.pdfIn PDF document text
    • https://s3.amazonaws.com/zeworibuzoza/47203950606.pdfIn PDF document text
    • http://fifomivosa.rf.gd/btech_malayalam_movie_songs_320kbps.pdfIn PDF document text
    • http://botemexake.rf.gd/dexas.pdfIn 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_off0000eb4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB4E 4896 bytes
SHA-256: 6852978e09ad90fbeaadb4dbd580dfc5f6909edcd690bd44b7e618975ffaa832
font_01_sfnt_off0000fbe6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBE6 2928 bytes
SHA-256: 3caeaf7d9c914dc140174c8a2a693f468c577aa11946eb45f83fcc5240a97d5b
font_02_sfnt_off000107f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107F6 11720 bytes
SHA-256: a5d1ffe6d157d430c5793f39680b9524749a47e1a63f2b6b5a67a87fbc3380a9