Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2fdce3b737c1f09…

MALICIOUS

PDF

68.8 KB Created: 2021-03-17 21:21:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: ec9c4f8b3a59b8badbdfd115d98c4e35 SHA-1: a3e44d03508411b8837946d653c3d986386587e2 SHA-256: f2fdce3b737c1f09fc55abe886f4ac2db6f224d7eed02ff988b3f2704f42a76d
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The sample is a PDF file flagged by ML classifiers and ClamAV as malicious. It contains numerous embedded URLs pointing to disposable domains and link farms, suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, appears to be a lure related to 'Margaritaville margarita machine recipes', which is likely a deceptive pretext to encourage users to click on the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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 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://kuzutuzo.ru/aws?utm_term=margaritaville+margarita+machine+recipes PDF link annotation
    • http://sumigemag.mywebcommunity.org/1228727015.pdfIn PDF document text
    • http://sodahq.pro/kewisegikozvxrhe.pdfIn PDF document text
    • http://goods-amzon.com/4518596780y4m7v.pdfIn PDF document text
    • http://tokio-2020.fun/how_to_draw_books_for_10_year_olds_ukbm78f.pdfIn PDF document text
    • https://cdn.sqhk.co/vekosozob/jSgcG90/minecraft_jurassic_world_download_failed.pdfIn PDF document text
    • http://sopugepibimel.mypressonline.com/crosley_cr44cd_turntable_console_with_cd_player_and_am_fm_tuner.pdfIn PDF document text
    • https://cdn.sqhk.co/sirazisiluz/REs0ADa/dominos_delivery_jobs_london.pdfIn PDF document text
    • http://junumidutuzakox.getenjoyment.net/when_i_play_espn.pdfIn PDF document text
    • http://pokupka.space/how_to_trade_cfd_on_saxo90af0.pdfIn PDF document text
    • http://dufifudusimube.mygamesonline.org/93670754291.pdfIn PDF document text
    • https://cdn.sqhk.co/wegodimumod/hhXY8hb/street_outlaws_mega_cash_days_2020.pdfIn PDF document text
    • http://f1l3download.site/babawitasuk72xo.pdfIn PDF document text
    • http://raisinshq.club/instructions_for_a_pregnancy_test2g0u4.pdfIn PDF document text
    • https://cdn.sqhk.co/kekotenonaxu/gibTogt/horizon_forbidden_west_trailer_2.pdfIn PDF document text
    • http://zunololanuxigu.sportsontheweb.net/assam_tet_question_paper_assamese_medium.pdfIn PDF document text
    • https://cdn.sqhk.co/muribirigim/edc2psp/60440981755.pdfIn PDF document text
    • http://sipataj.sportsontheweb.net/fuxiwo.pdfIn PDF document text
    • http://jidokove.scienceontheweb.net/is_music_streaming_profitable.pdfIn PDF document text
    • http://sportplays.ru/how_old_was_mr_darcy_in_pride_and_prejudiceluoxd.pdfIn PDF document text
    • http://idealica-ufficialeitalia.website/autotrol_255-460i_manual_espaol6ggxe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zepizevut.atwebpages.com/vabuponapuzulugudopasukod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6df59ec9-abff-42b1-832a-627e1ec60a7a/9051397078.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44706156-b707-4299-ad3a-160696eceaa1/someone_like_you_film_cast.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_off0000cc68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC68 5412 bytes
SHA-256: 7154fe4d71f8d8354761784a88e3a4cace7916894be0fa6638df2d803cd572c3
font_01_sfnt_off0000deb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEB9 11160 bytes
SHA-256: 6baf3e6c01668cd2df5c64a1e3710ccab6e6e2958e798d33991d1a5d796fd081

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