Malicious PDF — malware analysis report

Static analysis result for SHA-256 63d1c6ac1e966e3d…

MALICIOUS

PDF

73.2 KB Created: 2021-02-12 06:31:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 2cee0766e1c588415aa0efe6560eed53 SHA-1: 55dece790c0a5f856d13458941b28e119ae6358b SHA-256: 63d1c6ac1e966e3d2a6c24ef21c38b4c963c16bddc7c660a71f8429bfd7c602d
226 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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 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.
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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://jottigo.ru/wix?keyword=backyard+soccer+scummvm PDF link annotation
    • https://cdn.sqhk.co/zomulusiku/gnEhgak/58987483335.pdfIn PDF document text
    • https://cdn.sqhk.co/riketumes/3dDOHw8/project_war_mobile_online_shooting_game.pdfIn PDF document text
    • https://cdn.sqhk.co/zitajazasu/bb2jfjc/2791369099.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478125/normal_5fea15b9d3144.pdfIn PDF document text
    • https://cdn.sqhk.co/dukosisevu/3ngjwbX/rivals_at_war_mod_offline_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/rebamomidaw/JjgPCwG/shogun_hibachi_monaca_pa.pdfIn PDF document text
    • http://suwudera.22web.org/chicago_manual_of_style_citation_footnotes.pdfIn PDF document text
    • https://cdn.sqhk.co/fufeboxeri/BuDheEy/pinball_3d_game.pdfIn PDF document text
    • https://nupezodebugu.weebly.com/uploads/1/3/2/3/132302780/453233.pdfIn PDF document text
    • https://cdn.sqhk.co/dodiniwotud/loj1nig/jaxitu.pdfIn PDF document text
    • https://cdn.sqhk.co/fubafonu/ifNgihf/49493771881.pdfIn PDF document text
    • https://guxesawaxogego.weebly.com/uploads/1/3/4/3/134314991/jitigazitod.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443819/normal_6014fe0c78fed.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
    • https://s3.amazonaws.com/nuvukivaxiren/nolizif.pdfIn PDF document text
    • http://vulevusevugola.epizy.com/college_algebra_textbook_pearson.pdfIn PDF document text
    • https://s3.amazonaws.com/vatosolikijike/difficult_customer_interview_question_and_answer.pdfIn PDF document text
    • http://xefokezutuvij.epizy.com/aiag_manual_apqp.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_off0000d4d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4D8 4976 bytes
SHA-256: 510753fde7ad815a54c70c59f2c01ea635e869b6d1c52fb4c526e52334fdc3ca
font_01_sfnt_off0000e5c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5C8 10552 bytes
SHA-256: 4eb79dee449ec8fe25c20fbb6652145a1668e4c201507958dc93f096cd7d4d08
font_02_sfnt_off000109e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109E6 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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