Malicious PDF — malware analysis report

Static analysis result for SHA-256 07378b4c6e13d0cc…

MALICIOUS

PDF

70.4 KB Created: 2021-03-03 21:36:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 6ae95e30027e25fde45c880c12485383 SHA-1: e2632d9eb6f78763c94d078fcaac5da9825b4b17 SHA-256: 07378b4c6e13d0cc076f215983f9bd937638eb89cc0c4898cbbf3a37ef651aa1
126 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many of which point to disposable hosting and are designed to redirect users to potentially harmful sites, likely for phishing or malware distribution. The document body, though heavily obfuscated, appears to contain keywords related to product manuals and software, suggesting a lure to trick users into clicking malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://bologen.ru/strik?utm_term=craftsman+190cc+lawn+mower+manual PDF link annotation
    • http://sanatoriy-izumrudny.ru/kick_the_buddy_forever_hack_downloadt9hd5.pdfIn PDF document text
    • http://alluniversity.fun/pewujagikagilinosokemq42lk.pdfIn PDF document text
    • http://lolkek.xyz/430927525736qo4i.pdfIn PDF document text
    • https://safalijig.weebly.com/uploads/1/3/1/0/131070993/sirakusuwo.pdfIn PDF document text
    • https://cdn.sqhk.co/xusopusavo/LihCJih/amazon_go_grocery_overlake.pdfIn PDF document text
    • http://toolsbestpricemicrometer.site/best_answer_for_how_old_are_yousr34u.pdfIn PDF document text
    • https://cdn.sqhk.co/lofakekaf/ejaigOk/80684322809.pdfIn PDF document text
    • https://cdn.sqhk.co/komilede/hgMjij3/barber_shop_simulator_3d_download_pc.pdfIn PDF document text
    • http://ketousa.site/naxixbu52h.pdfIn PDF document text
    • http://clebohets.xyz/1516879128wmulw.pdfIn PDF document text
    • http://luchdobro.site/top_5_cordless_vacuum_cleanersbiz52.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vipuxafol/sony_dream_machine_auto_time_set_alarm_clock.pdfIn PDF document text
    • https://s3.amazonaws.com/figidireki/bevole.pdfIn PDF document text
    • https://s3.amazonaws.com/bamepofewalada/centerpoint_energy_houston_report_power_outage.pdfIn PDF document text
    • https://s3.amazonaws.com/rurovikejigibu/78968645362.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_off0000d6b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6B2 5376 bytes
SHA-256: c4d2af44e227d1ff4c72e9136c943b5c515518732e9a9d0cc474349a049500ec
font_01_sfnt_off0000e8f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8F5 10460 bytes
SHA-256: 2254143f213f303688736dfac30364961eff4055d2c14026d0f96fa63e9699d5

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