Malicious PDF — malware analysis report

Static analysis result for SHA-256 e12aac1cf1b43dfc…

MALICIOUS

PDF

80.5 KB Created: 2021-06-07 06:36:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 04f67edb6b72a06e3b35d22dd0b44cf4 SHA-1: 46e88f15965e960975e8d1b8d0219acca0e9fd9a SHA-256: e12aac1cf1b43dfca2285fdcaed3a5e2b6fadce0a682e537c6dd1cbd2478f793
186 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many pointing to disposable hosting services, suggesting a link farm or SEO manipulation tactic. The embedded URLs and the document's structure strongly suggest it is designed to redirect users to potentially harmful content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://wastran.ru/pbw?utm_term=how+to+get+a+voice+modifier+on+xbox+one PDF link annotation
    • https://lifigosup.weebly.com/uploads/1/3/4/8/134884960/sewafabakuronapifu.pdfIn PDF document text
    • https://zujakeme.weebly.com/uploads/1/3/4/0/134041616/7435046.pdfIn PDF document text
    • https://devoloxavigu.weebly.com/uploads/1/3/5/3/135318297/e110fd9a9e09.pdfIn PDF document text
    • https://jikudirag.weebly.com/uploads/1/3/4/0/134040407/zalivedabelisu.pdfIn PDF document text
    • https://kakizizutubune.weebly.com/uploads/1/3/4/3/134351089/retaxipebugakezawivo.pdfIn PDF document text
    • https://xozowozorero.weebly.com/uploads/1/3/2/6/132695390/mirawekafopow.pdfIn PDF document text
    • https://puvemeximaz.weebly.com/uploads/1/3/4/4/134442093/foganuxavi-jubavik-segutoloxaris-vigovunu.pdfIn PDF document text
    • https://zakelesi.weebly.com/uploads/1/3/7/5/137503615/5696640.pdfIn PDF document text
    • https://puzuzabijil.weebly.com/uploads/1/3/2/8/132814257/zazoxozudeme.pdfIn PDF document text
    • https://waxojokizubow.weebly.com/uploads/1/3/4/4/134482073/2672058.pdfIn PDF document text
    • https://mabaxezo.weebly.com/uploads/1/3/4/7/134766945/wigobusita.pdfIn PDF document text
    • https://ruvezidarumova.weebly.com/uploads/1/3/1/3/131380493/8046c6.pdfIn PDF document text
    • https://gefipozaxafuni.weebly.com/uploads/1/3/5/3/135312829/koretejalojasop.pdfIn PDF document text
    • https://xewiriwi.weebly.com/uploads/1/3/4/6/134645045/sabifuwejejul-redowiro-julotoso.pdfIn PDF document text
    • https://linonorimezolup.weebly.com/uploads/1/3/7/5/137519838/1171354.pdfIn PDF document text
    • https://dotofufodil.weebly.com/uploads/1/3/5/3/135313806/fcd87273a77b.pdfIn PDF document text
    • https://xulisonifob.weebly.com/uploads/1/3/2/6/132695361/naxisikawufixo-voxotefuda-kojitugega-kaweniseguvedes.pdfIn PDF document text
    • https://nojarotawufa.weebly.com/uploads/1/3/4/3/134313922/gumogurasilip.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/c546fcf3-bcfb-4db2-869f-a13c1e7bd077/59488824917.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e568b0a9-bd89-4610-8504-489dd40a7536/ruwuvaxekaj.pdfIn PDF document text
    • http://kigiputilik.pbworks.com/w/file/fetch/144679779/kijetozukiwi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6701892b-f7ee-480d-aee8-fc2791030ec7/dearborn_heater_grates.pdfIn PDF document text
    • http://jolowajuwijo.pbworks.com/w/file/fetch/144588810/farming_simulator_18_unlimited_money_apk_obb.pdfIn PDF document text
    • http://garewewaziwu.pbworks.com/f/deed_of_absolute_sale_vehicle_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/337a6db8-0671-430d-8ee0-e0a602cd4d3d/scotts_turf_builder_edgeguard_mini_broadcast_spreader_settings.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/79f16b46-9b05-4b38-8df6-69047120bc22/lord_of_the_rings_4k_steelbook_hmv.pdfIn PDF document text
    • http://wejojixi.pbworks.com/f/man_of_the_house_veronica_gym_fight.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_off0000fc6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC6E 5452 bytes
SHA-256: a1dac5a2c5776baec485076592ac899417920eae32cbc4c108909c8ae8c005e2
font_01_sfnt_off00010f09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F09 10880 bytes
SHA-256: 03c795bad866e6ce3eb6a641b7ef34fa2c8291cfbacb0d061aaa41e0c5f7e319

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