Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6575a3174018353…

MALICIOUS

PDF

82.7 KB Created: 2021-03-06 19:20:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 60eb61e04b88a51881f986ff5f923d36 SHA-1: 569d038547d2ba9115c9fb60ea49357b321e11e6 SHA-256: a6575a3174018353159ff65cf2157b62dbdb648edcc7221a7443fa281df10129
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains multiple embedded URLs, with the primary one being https://seumenha.ru/wix?keyword=the+rover+themes+pdf, suggesting a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URIs indicate an attempt to redirect the user to malicious content, aligning with spearphishing 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://seumenha.ru/wix?keyword=the+rover+themes+pdf
    • https://cdn.sqhk.co/nixibaraje/iaierjf/five_nights_at_freddy_s_2_unblocked_games.pdf
    • https://cdn-cms.f-static.net/uploads/4470552/normal_600d248a7ccd2.pdf
    • https://cdn.sqhk.co/jivomawufem/0VCRrzJ/gulapomus.pdf
    • https://cdn.sqhk.co/nazopekujavi/iqPajdm/49086134304.pdf
    • https://cdn.sqhk.co/fosojatesog/IigTjgd/98035555075.pdf
    • https://static.s123-cdn-static.com/uploads/4384831/normal_5ffe9b8f5e118.pdf
    • http://amsidisi.xyz/sapukaxebaxaphcr.pdf
    • https://cdn.sqhk.co/kojetozativ/QsjdgjM/zamow.pdf
    • https://cdn.sqhk.co/xanuramalu/Whr1oie/thimbleweed_park_hotel_walkthrough_casual.pdf
    • https://static.s123-cdn-static.com/uploads/4411931/normal_5ff5680024c26.pdf
    • http://jobauthor.online/93161265968puvkr.pdf
    • https://cdn.sqhk.co/pofifarim/UGjiajj/t_mobile_prepaid_recharge_options.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/4d68a865-4179-4cff-a6b9-4a677a47a6f4/49109526117.pdf
    • https://s3.amazonaws.com/mesotodimus/guidelines_for_creating_good_powerpoint_presentations.pdf
    • https://uploads.strikinglycdn.com/files/286a165a-193e-4ade-a5d9-1b0da30400cc/83036851639.pdf
    • https://s3.amazonaws.com/sikuva/89347449148.pdf
    • https://uploads.strikinglycdn.com/files/f6d4efd1-f259-43e0-b9b2-51920a60384a/gewojaxafunonuteriremo.pdf
    • https://s3.amazonaws.com/dezajok/o_que__o_marketing_digital_qual__a_sua_utilidade.pdf
    • https://uploads.strikinglycdn.com/files/470bc3ff-7917-43a2-b7be-20ce0f87d791/how_to_create_a_user_profile_page_in_wordpress.pdf
    • https://s3.amazonaws.com/tuxexi/solar_inverter_installation_guide.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_off00010925.bin
1487a25ba581d933120df97438a7c1e12c068dbecef7490498336d82a66a1b81
pdf-font-stream PDF embedded font (sfnt) at offset 0x10925 5048 bytes
font_01_sfnt_off00011a31.bin
61be73b84a211899a0442c53c65f5b5daa7a33345270894bf51f17bf223ee4ca
pdf-font-stream PDF embedded font (sfnt) at offset 0x11A31 10548 bytes