Malicious PDF — malware analysis report

Static analysis result for SHA-256 6945bdfbdba9401f…

MALICIOUS

PDF

68.1 KB Created: 2021-02-22 20:38:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 83ad193102f8eab72242f718f82316e4 SHA-1: 19c1b3eeaabaf1dfcb3fd5711d122abc66215f26 SHA-256: 6945bdfbdba9401f0c69311c60f76f289301662deabe32175b85fa56703b252b
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jacksth.ru/wix?keyword=adding+vectors+algebraically+worksheet PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4458840/normal_5fccb55344243.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426543/normal_602e7409d2ec6.pdfIn PDF document text
    • https://cdn.sqhk.co/gijosevozu/5jaijgh/67281844684.pdfIn PDF document text
    • https://cdn.sqhk.co/jawutuwek/XRhd6MF/ice_hockey_nintendo_game_online.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383797/normal_60174e0d305c5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388280/normal_5fc920bc6d240.pdfIn PDF document text
    • https://ledapenilodaro.weebly.com/uploads/1/3/1/0/131070651/6928466.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366382/normal_600e90541a118.pdfIn PDF document text
    • https://cdn.sqhk.co/gonaxetuped/dcgdcoI/spin_drift_car_drifting_games.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/votubukaxogilix/capitulo_5a_un_desastre_en_nicaragua_answers.pdfIn PDF document text
    • http://segigeserife.epizy.com/libagixirimufifofuvo.pdfIn PDF document text
    • https://s3.amazonaws.com/pibabopuduj/tukalapuzoxos.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxawetawupo/acousticsamples_sunbird_manual.pdfIn PDF document text
    • http://sufatugajakoras.rf.gd/is_ne2_2_paramagnetic_or_diamagnetic.pdfIn PDF document text
    • https://s3.amazonaws.com/jeponowon/impact_test_lab_report_abstract.pdfIn PDF document text
    • http://kamabutexukawiv.rf.gd/99761916170.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b9c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB9C0 5648 bytes
SHA-256: 4b9e9385453dbd6391cb975d23e00ac1ba7149cf1388d8da4bbac60e806efa6e
font_01_sfnt_off0000cd0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD0A 9548 bytes
SHA-256: 7a5dd95cffcff412fe9f83f64924b678e8d994ecf0b449648df69902c15f3a90
font_02_sfnt_off0000ee0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE0D 16136 bytes
SHA-256: e062faff0b5f3d12ef96d17a813e209689a07cec8984531399442ab350abe39b