Malicious PDF — malware analysis report

Static analysis result for SHA-256 a99f2dee54b87048…

MALICIOUS

PDF

64.0 KB Created: 2021-03-29 06:58:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 5f324a5996fb35b92488693f7a3f52ca SHA-1: 0639c6a170c8a1d53849b1ff732c2f09a3c2993d SHA-256: a99f2dee54b87048f9ddb13a3c182beba614aae5870a0870ea149ebf98fc0ce0
184 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 0.9800

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/award?keyword=download+kitab+fiqih+asmaul+husna+pdf PDF link annotation
    • http://frasqen.online/applied_science_diploma_2nd_sem_notessljfj.pdfIn PDF document text
    • http://myfoxing.online/onaroo_teach_me_time_talking_alarm_clock_sleep_trainer_and_nightlight5hhai.pdfIn PDF document text
    • http://sfhgfje5df.xyz/percy_jackson_books_in_orderdwjhb.pdfIn PDF document text
    • https://cdn.sqhk.co/kugorazig/jaHFFij/download_game_heroic_magic_duel_mod_apk.pdfIn PDF document text
    • http://xtreme-sport.ru/chiranjeevi_rakshasudu_songsd5bs6.pdfIn PDF document text
    • http://masajsalonunuz.com/wibekuzanepalwojw.pdfIn PDF document text
    • https://cdn.sqhk.co/ledusefugize/hj0jhD2/mopobomoxipipuzimorome.pdfIn PDF document text
    • http://im-marceting.site/14892863076idijb.pdfIn PDF document text
    • https://cdn.sqhk.co/libarazituw/jagjSh5/76224578348.pdfIn PDF document text
    • https://cdn.sqhk.co/rapekerokemo/jjhW3gi/granny_chapter_two_escape_game_online.pdfIn PDF document text
    • http://madewithsunshine.com/80523153452t1spq.pdfIn PDF document text
    • https://cdn.sqhk.co/mujawiru/jdibggi/ladudatudesufezufopuk.pdfIn PDF document text
    • https://cdn.sqhk.co/nonagidux/jiYEsjf/specialty_coffee_transaction_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/fefamuve/DdtMghF/darovedaz.pdfIn PDF document text
    • https://cdn.sqhk.co/dejuxafe/icjiadl/pro_lightroom_tips_to_learn_spanish.pdfIn PDF document text
    • http://chebsvet.ru/android_free_zip_filegdean.pdfIn PDF document text
    • https://cdn.sqhk.co/rivogigaweb/gfQKzg7/96947671928.pdfIn PDF document text
    • https://cdn.sqhk.co/zodunoxurob/dif7y3N/asteroid_2020_qg_flew.pdfIn PDF document text
    • https://cdn.sqhk.co/mowibani/gjahgxd/among_us_stickers_wastickerapps._com.pdfIn PDF document text
    • http://3gusevshop.space/what_is_the_meaning_of_howlaq57k9.pdfIn PDF document text
    • https://be9c8297-50e9-4ec8-be22-7cc4068ef96a.filesusr.com/ugd/fc3b0b_817ee36d185a40c99b1be3256acd69db.pdf?index=trueIn PDF document text
    • https://3b0fe5ff-7f86-489c-8138-fc984e51136c.filesusr.com/ugd/bfd78a_3e50c0d2153d463aa1cd1a9f189d6bba.pdf?index=trueIn PDF document text
    • https://2a497570-3881-454f-aefc-229a18bbdf22.filesusr.com/ugd/83e24f_c079237c7a904712b486f000a8998339.pdf?index=trueIn PDF document text

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