Malicious PDF — malware analysis report

Static analysis result for SHA-256 80518e9b0f7ddca0…

MALICIOUS

PDF

72.7 KB Created: 2021-02-18 06:58:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 3f3e334c3154b1129560a25313e107df SHA-1: 15c31c98bd8ea4c3d24db2f7182fa220e896b1ac SHA-256: 80518e9b0f7ddca0d12589e819dcdc251f5a217c26292f73b4896fda7ff1d0af
184 Risk Score

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/wix?keyword=the+sound+of+night+poem+analysis In PDF document text
    • http://aycotoro6.xyz/64111562767ixvtd.pdfIn PDF document text
    • https://cdn.sqhk.co/puvegipuros/Fwxhige/paragitesixufobape.pdfIn PDF document text
    • http://marafonsport.site/balancing_equations_challenge_worksheet_answer_keym4cv4.pdfIn PDF document text
    • https://kajuzenutojaso.weebly.com/uploads/1/3/4/6/134631714/fabuwalejirag-guzozivikemirup-gijok.pdfIn PDF document text
    • http://boviriso.22web.org/32368336249.pdfIn PDF document text
    • https://cdn.sqhk.co/repejuvovod/mSjf1je/crazy_kick_hack_mod_apk.pdfIn PDF document text
    • http://skywonder.space/nuforotekezipunirbgovs.pdfIn PDF document text
    • https://talupujepanuzan.weebly.com/uploads/1/3/4/5/134595677/3897554.pdfIn PDF document text
    • http://ejinaya.com/didi_china_app_apka20u0.pdfIn PDF document text
    • https://tivifetanesa.weebly.com/uploads/1/3/5/3/135347176/097ed00.pdfIn PDF document text
    • https://logifuvixejexa.weebly.com/uploads/1/3/6/0/136019385/xugixa-majamamopipev.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://momibur.rf.gd/water_test_for_coliform.pdfIn PDF document text
    • http://tonaxoguzigep.epizy.com/gipifopuderurubuluk.pdfIn PDF document text
    • https://s3.amazonaws.com/gedimuta/rikapixowu.pdfIn PDF document text
    • https://s3.amazonaws.com/widofafane/telimol.pdfIn PDF document text
    • https://s3.amazonaws.com/vezumobigodub/hungarian_dance_no._5_sheet_music_guitar.pdfIn PDF document text
    • https://s3.amazonaws.com/mejifavo/mandated_reporter_california_outside_of_work.pdfIn PDF document text
    • https://s3.amazonaws.com/wupagivoz/fluke_t100_voltage_tester_manual.pdfIn PDF document text
    • http://voxotili.epizy.com/rixuwugijobujode.pdfIn PDF document text
    • https://s3.amazonaws.com/muxozuvalubi/sefaneduris.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_off0000e077.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE077 5412 bytes
SHA-256: 1ee41eb36b96b219472df83875a469204213a0ad66cf8b4fcc6f55410874112b
font_01_sfnt_off0000f2c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2C7 10240 bytes
SHA-256: f19f23062916b7e7bf6526bba957d2b8358f0067cba366933d8bf586a89273c0

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