Malicious PDF — malware analysis report

Static analysis result for SHA-256 c869b9dfec669c31…

MALICIOUS

PDF

72.4 KB Created: 2021-02-11 23:16:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 89018a0df77cfcd891eaee6e7b21fa95 SHA-1: 45b0be273e8309a165fcdf7db08571f7fe47e66e SHA-256: c869b9dfec669c311b7f14edb78abe213d1c724ef350bc96b1e509d44c3b8ff5
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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.
  • 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=aws+d1.1+2020+effective+date In PDF document text
    • http://biggymstoe.com/watewawojuraxituxisaran0tl82.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472768/normal_600baba8f36c5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402707/normal_5fe9cc75690c8.pdfIn PDF document text
    • http://cleaner360.shop/zevenatklqwm.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392867/normal_602114204fd2a.pdfIn PDF document text
    • https://kegotewu.weebly.com/uploads/1/3/1/4/131437679/fepotupoje_numevabexi_kisedalisojamu_sekexororiva.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446924/normal_5fe85cb001f56.pdfIn PDF document text
    • https://sutowuvo.weebly.com/uploads/1/3/4/6/134685384/rujinuloviwike-vapek.pdfIn PDF document text
    • http://wtia.space/need_for_speed_exe_download_pcqe3fa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419198/normal_5fe82c4f07e1f.pdfIn PDF document text
    • https://norasavunoga.weebly.com/uploads/1/3/0/8/130874384/d022813bd0bfb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369160/normal_5ff76456b1fac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493545/normal_601644571bfe2.pdfIn PDF document text
    • http://lnstagram-badge-verification.com/maths_project_for_class_11qkw9g.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379839/normal_5fd77c8179d51.pdfIn PDF document text
    • https://ponuwusareti.weebly.com/uploads/1/3/1/6/131636782/fd393b6c657a.pdfIn PDF document text
    • http://venulejow.iblogger.org/forawiratogaxobutexanozun.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
    • http://roxegubipav.epizy.com/67785334227.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_off0000d241.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD241 4956 bytes
SHA-256: b090ee693cc9a3b62df3ced22283c3e30f7cd0287a3b16f37e852a3d8a5cda50
font_01_sfnt_off0000e342.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE342 10264 bytes
SHA-256: a78f410110c7c1c3e0dd730a007757df153a7310cf79d810c9aca68b16911e98
font_02_sfnt_off0001063c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1063C 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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