Malicious PDF — malware analysis report

Static analysis result for SHA-256 20e1c341010fdde9…

MALICIOUS

PDF

59.7 KB Created: 2021-03-09 02:21:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 4e541360b773419f428be839a2036684 SHA-1: a85b95426ddf26aaaeae06337148729e9ad85947 SHA-256: 20e1c341010fdde99608ab170330b3c786ceec187daaae9aea494543f7c0bf08
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of external links, many hosted on disposable domains, suggesting a link farm or SEO manipulation tactic. The ClamAV detection as 'Pdf.Phishing.Trojan' indicates malicious intent, likely to redirect users to phishing or malware sites. No scripts were extracted, but the embedded URLs and link farm structure point towards a phishing or malicious redirection attack.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4986

Heuristics 5

  • 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 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://jottigo.ru/award?keyword=aprender+italiano+pdf+portugues PDF link annotation
    • http://dewisazovuvoxi.mywebcommunity.org/bow_tie_cinemas_trumbull_showtimes.pdfIn PDF document text
    • http://lojapidabud.mypressonline.com/how_to_prepare_a_risk_assessment_form.pdfIn PDF document text
    • https://cdn.sqhk.co/vumorumuvogi/E6igHih/69220741585.pdfIn PDF document text
    • http://fojukivijivik.medianewsonline.com/41068626846.pdfIn PDF document text
    • https://cdn.sqhk.co/mojupesonon/gihfJQU/pax_labs_apple_app.pdfIn PDF document text
    • https://cdn.sqhk.co/tatudawo/jiH6jie/f1_mobile_racing_apk_mod_2._2._2.pdfIn PDF document text
    • http://zezasarasojid.mywebcommunity.org/kezegikarujuxijewubofi.pdfIn PDF document text
    • https://cdn.sqhk.co/nasubivapu/eLhgcjh/lizefeloboxotonakadifipo.pdfIn PDF document text
    • https://cdn.sqhk.co/bezofusipow/ijejazs/animal_jam_aj_book_lost_temple_of_zios.pdfIn PDF document text
    • https://cdn.sqhk.co/soziwariru/UMmDji6/time_traveler_2020_twitter.pdfIn PDF document text
    • https://cdn.sqhk.co/kugefiruxat/hn7hbjg/lego_legacy_heroes_unboxed_apk_android_oyun_club.pdfIn PDF document text
    • https://cdn.sqhk.co/jutafegobexe/Gvhe7jc/boomerang_fu_switch_update.pdfIn PDF document text
    • https://35479656-6a94-44d6-ac55-da507c14a2ae.filesusr.com/ugd/d68318_9672acc56cff436aa40749c255f20f23.pdf?index=trueIn PDF document text
    • http://rijemow.onlinewebshop.net/difference_between_because_of_and_because.pdfIn PDF document text
    • https://4328a374-8b5c-4134-9cef-e132ca5fc89d.filesusr.com/ugd/6732b1_af140589ec2c43ba996d8df78f8938ca.pdf?index=trueIn PDF document text
    • https://91953a53-6f32-4f2a-9b2e-0f954541ff31.filesusr.com/ugd/dad90e_1b5b9631615d4fc89971ff12a2011b9f.pdf?index=trueIn PDF document text
    • https://a32e93c2-1aa3-4149-af29-aa5d163ab988.filesusr.com/ugd/40336e_b39b6f3cddd74eac986e5326b76580ba.pdf?index=trueIn PDF document text
    • https://45ae50e1-98a8-4501-9ad6-fc0df438eb43.filesusr.com/ugd/b16523_a6f7527053ff46a6a55cc74858978a61.pdf?index=trueIn PDF document text
    • http://xedemigu.atwebpages.com/what_bird_has_orange_feet.pdfIn PDF document text
    • https://050a9d39-d8a1-4107-8be8-b2b70b72e454.filesusr.com/ugd/5262df_23fa16db8ff4421abac1fe0398263692.pdf?index=trueIn PDF document text
    • http://zubiluwetij.myartsonline.com/31316376287.pdfIn PDF document text
    • https://4095172d-bd2f-4181-91d7-dd424e653400.filesusr.com/ugd/df73ab_f789d8c6641e410faf4576f98ac82b12.pdf?index=trueIn PDF document text
    • http://gukutimaguvuzum.onlinewebshop.net/orbit_57894_instructions.pdfIn PDF document text

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