Malicious PDF — malware analysis report

Static analysis result for SHA-256 578da3aa220c63bf…

MALICIOUS

PDF

65.6 KB Created: 2021-02-04 05:53:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 54fb1ba5d21f1abcede061aaa46000bf SHA-1: 8c81bba5e740a38eea226d665f3b06edacfadd3c SHA-256: 578da3aa220c63bf25d29a10242982098abe4fb4ba870ade9e7e9160ab3a8d79
96 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by ML classifiers and ClamAV. 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 a workshop manual, aligning with phishing tactics.

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://jottigo.ru/aws?utm_term=cbr250rr+mc22+workshop+manual PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4474989/normal_6005e1a0aed3d.pdfIn PDF document text
    • http://help-copyrighteamservice.com/59101669353nkgzo.pdfIn PDF document text
    • https://cdn.sqhk.co/purorelaz/qge7yhg/lucky_block_mod_addons.pdfIn PDF document text
    • http://twobigs.space/38440099568p5qe8.pdfIn PDF document text
    • http://kinokaiff.space/crochet_penis_scarfmur2x.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427295/normal_6000fdfbd3620.pdfIn PDF document text
    • http://anyita.space/tijujodepevakanie7l5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470843/normal_5fdf4e9d1f18b.pdfIn PDF document text
    • https://cdn.sqhk.co/pulununese/gdlQVjh/memes_wars_apk_oyun_indir_club.pdfIn PDF document text
    • http://christinaanddavid2019.com/scunci_steamer_instruction_manual0em1f.pdfIn PDF document text
    • http://goldstein.berlin/mugen_rao_abinaya_song_masstamilangd4cy.pdfIn PDF document text
    • http://zoosalon.org/cardiac_cycle_easy_notesfic5i.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478127/normal_601a2fa58cff8.pdfIn PDF document text
    • http://tatajosak.22web.org/63370937581.pdfIn PDF document text
    • https://cdn.sqhk.co/fevivesuxofo/jiigfjj/zevemivokaliroxinara.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450427/normal_5ff541c602a04.pdfIn PDF document text
    • http://shopyou.online/fluid_mechanics_rc_hibbelerg4syo.pdfIn PDF document text
    • https://cdn.sqhk.co/dejijadu/DShiifo/59997095.pdfIn PDF document text
    • https://cdn.sqhk.co/xejudawadoni/gfjg5kl/saxokof.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sugajuze.epizy.com/14260852093.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b818.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB818 5772 bytes
SHA-256: 1c4ce8e4c4a8a08c4684b7e2a6f6df0a17e72ad700ff7bef237ef896bdf544c9
font_01_sfnt_off0000cba5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBA5 14484 bytes
SHA-256: 7b786684f57d128576917db91d0056d15f85f103ce3a4c5c152f69dd91c469ac

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