Malicious PDF — malware analysis report

Static analysis result for SHA-256 893051d186690451…

MALICIOUS

PDF

68.9 KB Created: 2021-03-13 23:20:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cb7eba9237a438f883d4da83b5a34bbf SHA-1: 76493b6ca6a8d339a4a2328ef14bca1de346d531 SHA-256: 893051d186690451d7ea59df5e6eb132e61f7fc93d64f83a8be73fb33cd3b0b1
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a malicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, contains keywords related to the embedded URL, suggesting a lure to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://xezojetit.ru/wix?keyword=oak+veneer+sheets+uk
    • https://cdn-cms.f-static.net/uploads/4421062/normal_601eb2bd0d4a8.pdf
    • http://galosidijixiwu.mypressonline.com/how_to_build_a_homemade_ice_cream_maker.pdf
    • https://cdn-cms.f-static.net/uploads/4501208/normal_6009db9131bd3.pdf
    • https://cdn-cms.f-static.net/uploads/4389804/normal_6046e86a71938.pdf
    • https://static.s123-cdn-static.com/uploads/4482415/normal_5fdf0283d07cb.pdf
    • http://bumosid.getenjoyment.net/2012_lexus_ls_460_for_sale_cargurus.pdf
    • https://cdn-cms.f-static.net/uploads/4450351/normal_5fe843832609f.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/takebemanijewok/faguwedukibovek.pdf
    • http://nizowozutagele.atwebpages.com/19080816391.pdf
    • https://484a0fbd-04e0-416f-b335-41eb3f66808b.filesusr.com/ugd/228afb_6a59356eb31148a7ae1882253e72f438.pdf?index=true
    • https://e57d8632-f742-4524-ada6-9cdf759d9f13.filesusr.com/ugd/b0cb2d_33575309deee4fb9b2fd05246b65c2d1.pdf?index=true
    • https://f89b8795-a90f-4359-81e0-6309601a98d9.filesusr.com/ugd/8e7730_6c827f1a2bed4dfd80f18060ab0ad2e1.pdf?index=true
    • https://s3.amazonaws.com/fekife/sta-rite_1.5hp_pool_pump_motor.pdf
    • https://b3d988c2-7a7d-4c3c-9141-221b6550481e.filesusr.com/ugd/9dda13_e607a952b3594271b06fe80328947721.pdf?index=true
    • https://s3.amazonaws.com/vixuwogetiv/icloud_to_android_whatsapp_transfer.pdf
    • https://67bb8873-ca08-4da4-87c0-60a8072ebff6.filesusr.com/ugd/a838c0_fffe34f0815545bfa5f4488adebf84d9.pdf?index=true
    • https://s3.amazonaws.com/sutawowirosuvuv/black_lace_formal_dresses_australia.pdf
    • https://083189c9-8220-4687-a375-57be19a37228.filesusr.com/ugd/909b15_bf7e958bcec7414f99a78be4afe0167a.pdf?index=true
    • https://s3.amazonaws.com/kukazowox/teluvunebu.pdf
    • https://s3.amazonaws.com/baxunaf/what_does_samsung_smart_remote_do.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d278.bin
88d3043a83d77797179451c57936c6ab3554a2816278bdb7c6f2aa0c37b604ae		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD278 4892 bytes
font_01_sfnt_off0000e31c.bin
6ad672655ca12e632026ea656e2b753ef534437497ea8bcc8cdafefd292a9bb7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE31C 10340 bytes

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