Malicious PDF — malware analysis report

Static analysis result for SHA-256 44d5455ca0c282d1…

MALICIOUS

PDF

72.2 KB Created: 2021-02-12 15:38:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 29c2f5d3129b2cc1965f4f0c5d264e5d SHA-1: 3277fece6db1ba208fa458b64832d421cde8abfd SHA-256: 44d5455ca0c282d1a46320e51da3e731a5abba73c742436ae5965a1ddf70fa76
96 Risk Score

Malware Insights

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

The file was identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains embedded URIs pointing to external websites, suggesting a phishing or credential harvesting attempt. The PDF structure and embedded content indicate it's designed to exploit users by directing them to potentially malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://seumenha.ru/wix?keyword=viscidus+guide+aq40
    • https://waruzakelejabu.weebly.com/uploads/1/3/4/6/134600446/9331834.pdf
    • http://get3creditscores.info/vivisadalukapabigovjigu.pdf
    • https://static.s123-cdn-static.com/uploads/4370263/normal_5ffa67f376eba.pdf
    • https://mosagalalevo.weebly.com/uploads/1/3/4/6/134668437/6429265.pdf
    • http://konsalting.info/docx_template_to_phpk3doj.pdf
    • http://remont-pc.website/45fj2.pdf
    • https://static.s123-cdn-static.com/uploads/4411001/normal_6000971984873.pdf
    • http://jasapremium.xyz/timer_clock_app_download7yo5d.pdf
    • http://verifiedbadge-lnstagram.com/dezoxofo1zjgy.pdf
    • https://tudexabi.weebly.com/uploads/1/3/4/7/134770635/xulotisosu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://suzimisefodude.epizy.com/atsui_negative_form.pdf
    • http://zotibulavozixu.rf.gd/fapon.pdf
    • http://dokelegusipodi.epizy.com/kigebulawudil.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_off0000df70.bin
1250a9b42718ac1c200a4fce6aef87fa7b382f95e846242d6bae91e42c46b5e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDF70 5300 bytes
font_01_sfnt_off0000f190.bin
2fe78bc8aee4c0a7822c0c8524d94b13c7a9dfe280718c3181027c890837e310		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF190 10056 bytes

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