Malicious PDF — malware analysis report

Static analysis result for SHA-256 f150dcba63d27755…

MALICIOUS

PDF

91.3 KB Created: 2021-03-18 10:47:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f2aaaf363fc3b38fa2ba5e35f48590ae SHA-1: b7fb07d1e8790fd33da37e5b01f87bf9c171b977 SHA-256: f150dcba63d27755ee4ce1119692798f25254267e2881e78c5445b6b1e6b6b9c
96 Risk Score

Malware Insights

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

The file was detected as a malicious PDF by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of an external URI pointing to a search result for a manual suggests a phishing or malware distribution lure. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious document designed to trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://soxebez.ru/award?keyword=canoscan+8800f+manual+pdf
    • https://cdn.sqhk.co/dojoxuwote/iiuZSia/giwerobogajij.pdf
    • https://cdn.sqhk.co/zasokolof/dyNjcjh/installing_mods_skyrim_special_edition_manually.pdf
    • https://cdn.sqhk.co/mudemodox/Uiehix3/ziwobefif.pdf
    • https://cdn.sqhk.co/xogixute/Hifgvhf/60157580817.pdf
    • https://cdn.sqhk.co/bedogipaxog/XHhj89x/planet_fitness_membership_transfer_fee.pdf
    • https://static.s123-cdn-static.com/uploads/4373281/normal_6005e0bb75d98.pdf
    • http://mikovil.mywebcommunity.org/3350883112.pdf
    • https://cdn.sqhk.co/nowavutu/Njggihf/72026856168.pdf
    • https://cdn.sqhk.co/lovolipeg/bj2JxQM/todo_cuero_chorrera.pdf
    • http://leninuludobodu.mygamesonline.org/dizonaze.pdf
    • https://cdn.sqhk.co/loxepafigav/1Njqpy0/75834914050.pdf
    • https://cdn.sqhk.co/tikugubobo/LfNjghi/16369925319.pdf
    • https://cdn.sqhk.co/xamitarerivu/vjhifgf/playstation_5_pulse_3d_wireless_headset_amazon.pdf
    • https://static.s123-cdn-static.com/uploads/4388169/normal_5ff198a4ef102.pdf
    • https://cdn.sqhk.co/kodivitedi/hhfDgcq/45054703535.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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_off000126d7.bin
78d6397faf159c5dff95c1dc16d4ae800c477f7d20a8bfc7fcea206e69a2c89a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x126D7 5444 bytes
font_01_sfnt_off00013947.bin
4af546528f18ab41901af9c82032fd18655567dcb59a90e8b34d17088b0445ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13947 11880 bytes

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