Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a46c3ff48cbd09a…

MALICIOUS

PDF

71.4 KB Created: 2021-02-20 10:33:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 5f7df0c3d32fd91cef2d4b10d08cfe28 SHA-1: 0a96e639e647525d47fb4403721c0fe67c0a1723 SHA-256: 9a46c3ff48cbd09aa998b00f9a158086c056b4d9bae931d3a45574f00a4295d6
184 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
  • 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://yafferge.ru/wix?keyword=rainbow+six+siege+hd+texture+pack+size In PDF document text
    • https://cdn-cms.f-static.net/uploads/4373264/normal_6027f7111abef.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371244/normal_60013b70914d4.pdfIn PDF document text
    • http://bluhgang.best/hallelujah_easy_piano_sheet_music_fr0npqh.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487935/normal_5ff03d22b82a8.pdfIn PDF document text
    • http://tb-films.ru/58243552260zb5of.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465548/normal_601803cb7901f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369332/normal_60285d8a10b02.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403418/normal_5fc9fe8b4888a.pdfIn PDF document text
    • https://cdn.sqhk.co/weruvewo/ibpCkhj/11st_5lb_in_pounds.pdfIn PDF document text
    • http://varietystore.website/83615180668fem0o.pdfIn PDF document text
    • https://cdn.sqhk.co/vopofuxo/h7aBih1/tor_browser_32_bit_softonic.pdfIn PDF document text
    • http://vofidiporalives.22web.org/whirlpool_refrigerator_door_ice_maker_stopped_working.pdfIn PDF document text
    • https://cdn.sqhk.co/patemugimej/gdgj53J/75248951518.pdfIn PDF document text
    • http://buvinivu.iblogger.org/36043919471.pdfIn PDF document text
    • http://autoport76.online/bandook_2_dj_remix_song1j8tg.pdfIn PDF document text
    • https://cdn.sqhk.co/zomulusiku/yidgghh/tiny_armies_apple_watch.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://miwexosekapofaj.rf.gd/how_to_cook_quinoa_in_tupperware_rice_cooker.pdfIn PDF document text
    • http://mafukifuwu.epizy.com/pawiferajelodu.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_off0000d867.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD867 5724 bytes
SHA-256: 4bb414cb70fe00924e0c094ab17aadde6e7238cf0be176e2ad9bda6e30550597
font_01_sfnt_off0000ec02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC02 10540 bytes
SHA-256: 497571f27aa5b4b02be9eaf7b66143776cc567d82bcd9910a7de4ed7cb051a50

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