Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e6803668df14159…

MALICIOUS

PDF

78.9 KB Created: 2021-02-28 01:47:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 2243464b5d6a59831b7bdbaaaa9b1036 SHA-1: 4c0b66d2dcae631496e8ec8c67bf4cc5ed10a02b SHA-256: 9e6803668df14159b7a163de252fd872499634b21847c6c2d44c528c1540c6e9
126 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. It contains numerous embedded URIs, many pointing to disposable domains, suggesting a link farm designed to redirect users to potentially harmful content. The document body's garbled nature and the presence of external links strongly suggest a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://gimoguvi.ru/award?keyword=emergency+medicine+physician+salary+washington+state PDF link annotation
    • http://mojadejazisapa.sportsontheweb.net/mississippi_learners_permit_driving_rules.pdfIn PDF document text
    • https://cdn.sqhk.co/wogefosa/3HifMij/28179901136.pdfIn PDF document text
    • https://cdn.sqhk.co/xemugugafot/jdjfgiG/did_it_snow_in_colorado_springs_yesterday.pdfIn PDF document text
    • https://cdn.sqhk.co/gupuwiwi/VBPjhih/12379703727.pdfIn PDF document text
    • https://cdn.sqhk.co/rejibebadit/Yhggjsk/techno_music_online_radio_stations.pdfIn PDF document text
    • http://vijexibat.mywebcommunity.org/does_beats_have_lifetime_warranty.pdfIn PDF document text
    • http://tokexal.medianewsonline.com/example_of_approach_avoidance_conflict_in_psychology.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387577/normal_5ff5a420865a4.pdfIn PDF document text
    • http://veruvipavopa.getenjoyment.net/where_can_i_watch_bosch_in_canada.pdfIn PDF document text
    • http://rubewox.sportsontheweb.net/1952_international_truck_wiring_diagram.pdfIn PDF document text
    • http://jaralet.getenjoyment.net/60925941226.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371258/normal_5fe3efd79dcf1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480897/normal_5fe18482307f7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415944/normal_5feb0bdf1e504.pdfIn PDF document text
    • https://cdn.sqhk.co/zefadanexa/iaghhcL/maze_runner_4_trailer_german.pdfIn PDF document text
    • http://xepidenad.scienceontheweb.net/manual_de_organizacin_y_funciones_de_una_empresa_pequea.pdfIn PDF document text
    • http://didazema.mypressonline.com/51340426815.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://bitugoxopezuwu.rf.gd/kovopewujipijij.pdfIn PDF document text
    • http://kofaxafogi.myartsonline.com/sotamuluxopofopizagog.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e93a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE93A 5428 bytes
SHA-256: 476cbc7b53b6f5cb1db0b629bf97913647329dbfe983589fcb1e30935dfa82e8
font_01_sfnt_off0000fb91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB91 10644 bytes
SHA-256: 10e0d3f42d09d1549c533a586d991be1336ff901b0226092a4ad4f009b5324b1
font_02_sfnt_off00012007.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12007 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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