Malicious PDF — malware analysis report

Static analysis result for SHA-256 df9b32c0e330f1ea…

MALICIOUS

PDF

75.9 KB Created: 2021-03-18 14:42:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 599199464719b7667eb91f13476de088 SHA-1: 367e687fe1b99ac7ff2aa55e85fff70a0d73d951 SHA-256: df9b32c0e330f1ead4143980f180d185aafbcdd31b36ec7a5614858690b5dc0f
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 0.9956

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 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://pelibifir.ru/award?keyword=add+blank+page+to+pdf+mac PDF link annotation
    • http://esportzmlevent.com/epidemiology_beyond_the_basics_third_editionymrd0.pdfIn PDF document text
    • http://helpcopyright-service.com/panasonic_bq-cc17_battery_charger5rt2y.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425255/normal_6003ac5090930.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384644/normal_6007e97c24eb0.pdfIn PDF document text
    • http://betmoy57.com/nubipesxpluw.pdfIn PDF document text
    • http://fastpeysistem.online/california_reading_fluency_standardsn0olo.pdfIn PDF document text
    • http://jiwapadenejeza.getenjoyment.net/clash_of_kings_strategy_game_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/litawoxelida/IUgfPge/lenotomirotamew.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370269/normal_60285daa7e440.pdfIn PDF document text
    • http://particulieres-societegenerale.best/79053350284t1smq.pdfIn PDF document text
    • https://cdn.sqhk.co/japokaxe/jifHihl/alexandra_porat_songs.pdfIn PDF document text
    • http://rafale.store/jugexilikilinaweterekvkoyt.pdfIn PDF document text
    • http://fekevopimibun.sportsontheweb.net/91004278646.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471682/normal_60150eadd8e81.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390663/normal_60272b4e859b6.pdfIn PDF document text
    • https://cdn.sqhk.co/pagupuxu/hgRjeVp/war_conquer_apk.pdfIn PDF document text
    • http://oneitshop.info/lenards_cooking_guide_pinwheelborsi.pdfIn PDF document text
    • http://kompledom.com/66234836606qotd6.pdfIn PDF document text
    • https://cdn.sqhk.co/tezofugowura/oqMghge/cool_manly_wallpapers.pdfIn PDF document text
    • http://bumasujofoj.getenjoyment.net/focusrite_scarlett_solo_ableton_live_lite.pdfIn PDF document text
    • http://itash.space/68170963543p75go.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://motagetezo.epizy.com/excel_2020_tutorial_free_download.pdfIn PDF document text
    • http://tabolamekosedu.epizy.com/anticipatory_bail.pdfIn PDF document text
    • http://bajepazefifu.rf.gd/ziwedejebimitofovuwomili.pdfIn PDF document text
    • http://sukidagijonola.rf.gd/visual_auditory_kinesthetic_test_for_students.pdfIn PDF document text
    • http://miloritamuve.rf.gd/84460267017.pdfIn PDF document text
    • http://noratev.myartsonline.com/que_es_la_silaba_atona_y_10_ejemplos.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA95 5396 bytes
SHA-256: d0527f1f345697453408027fa29d608ca21ce0c510e3fd8e7fc934a660d51286
font_01_sfnt_off0000fce9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCE9 10884 bytes
SHA-256: 24e85b88a6f196bbf683e291c368b711cb14f063482d17ee49a3aa0feeebbda7

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