Malicious PDF — malware analysis report

Static analysis result for SHA-256 67a6947846de62b2…

MALICIOUS

PDF

73.6 KB Created: 2021-02-16 10:23:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: ff989b20ab705e921fc4aefd0073a82d SHA-1: deee9527c30f44ba372dc5dac05633d76e6f34fb SHA-256: 67a6947846de62b265fc385385a58ff4a3d41ad445e55db47fd8004fffa9a7b9
184 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to malicious infrastructure, specifically identified by the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic. The document body, though heavily obfuscated, appears to be a lure related to 'Jack Reacher Amazon Prime TV Show Cast' to entice users to click the malicious URL. The ML classifier and ClamAV detection further support the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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/strik?utm_term=jack+reacher+amazon+prime+tv+show+cast In PDF document text
    • https://cdn-cms.f-static.net/uploads/4380694/normal_600d08e697178.pdfIn PDF document text
    • http://edalovert.xyz/484822415645143g.pdfIn PDF document text
    • http://intereriia.com/vakizz07bn.pdfIn PDF document text
    • http://it50life.pro/family_zoo_the_story_apk_modpvj46.pdfIn PDF document text
    • http://fixmarker.fun/obusforme_low_backrest_supportzxpt6.pdfIn PDF document text
    • https://cdn.sqhk.co/zogobadakedu/igeOBA4/find_my_computer_specs_windows_7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470537/normal_5feb8b46a85b1.pdfIn PDF document text
    • http://callipakk2.site/poor_unfortunate_souls_book2g4zb.pdfIn PDF document text
    • http://kungfumalibu.com/96564658188pfiaa.pdfIn PDF document text
    • http://hristogrigorov.com/91739306799nxm5g.pdfIn PDF document text
    • https://cdn.sqhk.co/dupeguwova/u8jbgjO/evoland_3d_vibration_plate.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4503987/normal_5fe58c1cb8352.pdfIn PDF document text
    • http://proflist-kursk.ru/punimoma2gept.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449170/normal_5fd0aa4ebebfa.pdfIn PDF document text
    • http://trycabinets.xyz/antes_de_morirme_libro1o77f.pdfIn PDF document text
    • http://lifeshop.pro/essential_mathematics_for_economics_and_business_downloadxpzmd.pdfIn PDF document text
    • http://zzzmmmmejjj.space/picadura_de_alacran_en_pediatria4rdcc.pdfIn PDF document text
    • https://cdn.sqhk.co/nupegefozub/I3cidid/siladatix.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/wazagidonux/texiromigizinavuneb.pdfIn PDF document text
    • https://s3.amazonaws.com/xepululejiwof/api_platform_symfony.pdfIn PDF document text
    • https://s3.amazonaws.com/lijulijowivaze/markup_with_apple_pencil.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_off0000d53f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD53F 5184 bytes
SHA-256: f44a0f3790fedca08f52ab40f3599c4f0249c4ee4e0bf791f233bd8c490ce4e4
font_01_sfnt_off0000e6ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6CA 10564 bytes
SHA-256: 61835dc1c4d84d1d344127349282244e73b7df00f1b6f2194120301b2394c747
font_02_sfnt_off00010aee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AEE 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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