Malicious PDF — malware analysis report

Static analysis result for SHA-256 93ba68e7551450ba…

MALICIOUS

PDF

72.9 KB Created: 2021-04-02 17:45:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: a00df9d8aeeff7861d1b96ca7a8672a8 SHA-1: 26fc417b87b974a1a1b2b4e0fa63540c1c6e7f8e SHA-256: 93ba68e7551450bacca8c5a1074928851cad90182269fb74ae35763a521dbadb
146 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of numerous external URIs, including a link farm on disposable hosting, suggests an attempt to redirect users to malicious sites. The 'SE_CALLBACK_LURE' heuristic further supports a phishing or scam pretext, likely aiming to trick users into visiting a compromised URL for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://baarspo.ru/123?utm_term=mdat+gog+reporting+area PDF link annotation
    • http://fakts.design/28822608761y2aei.pdfIn PDF document text
    • http://kadaxejob.mypressonline.com/fender_mustang_gtx50_amp_list.pdfIn PDF document text
    • http://tehnikator.ru/zky_et_le_serpent_python_tapuscrittfm59.pdfIn PDF document text
    • http://kungfumalibu.com/what_is_difference_between_web_api_and_wcfyjbya.pdfIn PDF document text
    • http://neo-tp.ru/wahl_hair_clippers_charging_cablexabcn.pdfIn PDF document text
    • http://lovelyhouse.online/car_shift_knobs_universalzm630.pdfIn PDF document text
    • http://shothard.site/fewidajlp9om.pdfIn PDF document text
    • http://4kuhd.me/278842199253l6pm.pdfIn PDF document text
    • http://tur8osale.site/349270267624nqbm.pdfIn PDF document text
    • http://italysummer.fun/41963439818xkgxp.pdfIn PDF document text
    • http://boraguw.medianewsonline.com/hungry_hippos_game_rules.pdfIn PDF document text
    • http://jakesubinosol.scienceontheweb.net/what_is_normal_sewing_machine_tension.pdfIn PDF document text
    • http://medicinfo.online/xijufumenawixagaxodly6n6.pdfIn PDF document text
    • http://putinoid.ru/podoxadifisejowevobipita5fxmy.pdfIn PDF document text
    • https://cdn.sqhk.co/podogule/ZC7ShiY/not_double_clutching_like_you_should_quote.pdfIn PDF document text
    • http://parazepurafeza.medianewsonline.com/wotogux.pdfIn PDF document text
    • https://cdn.sqhk.co/tinupolureg/RqgfhgN/best_base_builder_games_pc.pdfIn PDF document text
    • http://frukt.fun/2015_subaru_forester_maintenance_schedulegbk7c.pdfIn PDF document text
    • http://seamanygau.best/145467605cr0ul.pdfIn PDF document text
    • http://sipipewawezizuf.getenjoyment.net/10387961272.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://a3de454e-1598-42bb-a259-4eb69c42f179.filesusr.com/ugd/fb5067_c66bedca70be4cda928ccbb5184641ee.pdf?index=trueIn PDF document text
    • https://c788b29d-df2d-4d46-9946-349e8cce89b7.filesusr.com/ugd/a9e086_01e03e02c2cd4bd38929ad06390f342e.pdf?index=trueIn 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_off0000dfc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFC6 4920 bytes
SHA-256: 78db6bbbd3dbdc805a842300f8145e2dbc59a7aee2356e2dd43b8f2fe5b6c99e
font_01_sfnt_off0000f09f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF09F 11404 bytes
SHA-256: fa038b8aa5e390019931f5b90f170656857273c5f1aef74b95bc84c7dbe1f1e9

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