Malicious PDF — malware analysis report

Static analysis result for SHA-256 74aa981c8d3b67cd…

MALICIOUS

PDF

76.3 KB Created: 2021-02-18 09:43:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6b81afcfcff5747fa6b9325eab263026 SHA-1: d2efe2977d39fd1cc075df43e08051b20dea61a0 SHA-256: 74aa981c8d3b67cd0bf569f007fb7ab4bd48b5796b251d21651ab6aa496de3a4
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The document body, though heavily obfuscated, suggests a lure related to 'Dremel cutting guide', aiming 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://druttle.ru/wix?keyword=dremel+cutting+guide
    • https://cdn.sqhk.co/kolazapikib/gTwLChf/mr_bullet_spy_puzzles_hack.pdf
    • http://tejifepubodol.iblogger.org/kitebobavufoxofize.pdf
    • https://static.s123-cdn-static.com/uploads/4481675/normal_5fe5d1c09d974.pdf
    • https://cdn.sqhk.co/wakivugex/hjAtTgj/how_to_use_weapon_mastery_tokens_doom_eternal.pdf
    • http://xodulik.66ghz.com/t_shirt_print_size_template.pdf
    • https://cdn.sqhk.co/nudizodi/gibighj/17_tujuan_sdgs_kesehatan.pdf
    • https://static.s123-cdn-static.com/uploads/4388620/normal_5ffddb5463d99.pdf
    • https://static.s123-cdn-static.com/uploads/4464861/normal_5fe3c176454ca.pdf
    • https://cdn.sqhk.co/kajemuwasutu/bh7jhee/5_fun_facts_about_mesopotamia.pdf
    • https://static.s123-cdn-static.com/uploads/4495390/normal_5fe5d3d52ad82.pdf
    • https://cdn.sqhk.co/vidikusupegu/cBuZcSP/41460012992.pdf
    • http://silorab.22web.org/lutalamoramivabul.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://tikobonojaxax.epizy.com/total_conquest_apk_mod_unlimited_gold_apple.pdf
    • http://jeragapa.epizy.com/ctasd_reports_unknown.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_off0000f04c.bin
af48bc0a65f1814d6c7ba2b273394fbb5bdf30056f5dfdaac85f949e3fa92cd9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF04C 4872 bytes
font_01_sfnt_off000100ca.bin
38a404d043b6eb30b08262c97caaddb0ba6172d3141a3eb09d06eb3e58e2334d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x100CA 10364 bytes

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