Malicious PDF — malware analysis report

Static analysis result for SHA-256 483422658de9d31d…

MALICIOUS

PDF

75.2 KB Created: 2021-03-05 22:36:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 51c9e4adfc1480c96b9f41de3ac3291d SHA-1: 5289fe8c47bda4e129a741d78e73ae39bffebcac SHA-256: 483422658de9d31d13d041d9ebdc49b49d6c5dd49e75fcae7c6bb95c68b93882
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains numerous embedded URLs, many pointing to disposable domains, and is flagged as a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The presence of URLs related to game hacks suggests a lure to attract users to potentially malicious content.

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://xajibur.ru/wix?keyword=call+of+duty+mobile+hack+aimbot+apk PDF link annotation
    • http://patagoxipu.iblogger.org/read_romance_books_online_free.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501962/normal_5fcabc2012803.pdfIn PDF document text
    • http://petuvinopezana.iblogger.org/free_flyer_template_for_mac_pages.pdfIn PDF document text
    • http://felejus.iblogger.org/46978126249.pdfIn PDF document text
    • http://sudilufib.getenjoyment.net/paluzagusatevezumu.pdfIn PDF document text
    • http://xigosilefonaboj.iblogger.org/zigakewoz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463552/normal_60322a710f4e9.pdfIn PDF document text
    • http://zakunofukar.iblogger.org/71555519008.pdfIn PDF document text
    • http://digerutejonoju.22web.org/kenmore_coldspot_ice_maker_assembly.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://waxivetik.epizy.com/xufed.pdfIn PDF document text
    • https://391e4f24-9fc9-4707-ac06-338edcd9f959.filesusr.com/ugd/110ef3_6154d767e8254013b674461002251cf1.pdf?index=trueIn PDF document text
    • http://xijejuvi.myartsonline.com/focusrite_scarlett_18i20_second_generation.pdfIn PDF document text
    • https://0ea28b16-58c2-472d-b6be-3e97fe9b7bb6.filesusr.com/ugd/696b8a_cacdd751cbfc4d989674bb2334f04e53.pdf?index=trueIn PDF document text
    • https://e29a9437-b0a5-48a6-9afa-908397ce514a.filesusr.com/ugd/16a9c1_22426f39cfe542e7b55748885e316ce9.pdf?index=trueIn PDF document text
    • http://pakefuvusenoz.rf.gd/64732346741.pdfIn PDF document text
    • https://7a1f2a0d-094a-4466-88af-72a4af93b9fa.filesusr.com/ugd/22739b_978a13b748024849966b62d8fad38f5d.pdf?index=trueIn PDF document text
    • https://eaae50f7-3b1c-4f1b-9b3c-e2a48377569d.filesusr.com/ugd/b96e41_d997863acf084921b55ec355960e3836.pdf?index=trueIn PDF document text
    • https://6d706a39-1f93-4f1a-9423-caccf7e65e71.filesusr.com/ugd/69f91f_f1d5563a71414abfbbb094d6e6de4e1c.pdf?index=trueIn 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_off0000e99a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE99A 5332 bytes
SHA-256: 8468bb55217876103e35e90d43829fa93a940dd7851d7af23c0329ad939bf005
font_01_sfnt_off0000fba0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBA0 10472 bytes
SHA-256: 58c157b7df97bc86c261792ca65d8d2a4fe079c8d32caafbeaaf9a341dfcedef

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