Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ab73d7556eddd8b…

MALICIOUS

PDF

76.8 KB Created: 2021-03-17 16:31:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 9d108d9327b81f05555bb09c22d192db SHA-1: cdec17074e92df4c3dc2d015926bdeb4b27c502a SHA-256: 7ab73d7556eddd8bac3c45038faea7d423d9fe5d944c7655affc88a24d28acba
126 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a machine learning model and ClamAV, indicating malicious content. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic and the numerous extracted URLs suggest the document functions as a link farm, likely directing users to phishing sites or malware downloads. The presence of 'utm_term=mississippi+drivers+license' in one URL hints at a potential lure related to official documents or identity verification.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://midufefew.ru/strik?utm_term=mississippi+drivers+license PDF link annotation
    • http://design-kvartira.info/a_thousand_splendid_suns_summary_chapter_13x58qb.pdfIn PDF document text
    • http://bigtittybella.com/how_do_you_promote_cultural_competence_in_the_workplacelzha6.pdfIn PDF document text
    • http://atomlinux.com/wireshark_tutorialn1v5e.pdfIn PDF document text
    • http://maleev.online/lily_collins_unfiltered_deutschcx5wq.pdfIn PDF document text
    • https://nufapapezo.weebly.com/uploads/1/3/0/9/130969462/9796968.pdfIn PDF document text
    • http://douchehq.xyz/honda_eu2000i_spark_plug_part_numberm6zcq.pdfIn PDF document text
    • https://wesuzimowigimeb.weebly.com/uploads/1/3/4/7/134745326/6921064.pdfIn PDF document text
    • https://cdn.sqhk.co/puwidebudojo/ZJ55jiw/44820789359.pdfIn PDF document text
    • http://dvertsoff.ru/31157355463vxu1k.pdfIn PDF document text
    • http://hookup154.site/ukulele_strumming_patterns_3_4x6bjk.pdfIn PDF document text
    • https://gadufekovofu.weebly.com/uploads/1/3/4/7/134764592/tisesazasagiguzab.pdfIn PDF document text
    • https://tivepikilusu.weebly.com/uploads/1/3/4/7/134759048/9551660.pdfIn PDF document text
    • http://the-glow.ru/dungeons_and_dragons_5th_edition_players_handbook_download_freem1flg.pdfIn PDF document text
    • http://goromeo.club/hd_aquarium_screensaver_freevcpka.pdfIn PDF document text
    • http://plsale.pro/mathias_mhere_favour_albumt7fmn.pdfIn PDF document text
    • http://inertbhjbj.ru/how_to_promote_multilingualism_in_the_classroomaiqla.pdfIn PDF document text
    • https://cdn.sqhk.co/zojixemem/eeIji8Y/achat_recharge_mobicarte_orange_en_ligne.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b8507d8-b8bf-4890-9e5a-66be07f70a75/76076956170.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/31e1939d-135a-4488-b286-75f1454d84a5/classical_music_appreciation_course_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/046b12cd-6a07-40bf-8d31-100bd5a295e8/4142834946.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/496768b5-ebd1-46d6-87ff-c2293f5260d9/mn_dmv_drivers_test_appointment.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_off0000ec04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC04 4920 bytes
SHA-256: f7e509bffe91c5ada2dba255cf0ade6706a867c74b6d2c1a191dd6f4aabd5afa
font_01_sfnt_off0000fce8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCE8 11764 bytes
SHA-256: d1f9c62291312fc9e61a55501e472411079cfd7e8a3d6edf051383159b5062d4

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