Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2d2ea4bdaba6baf…

MALICIOUS

PDF

78.9 KB Created: 2021-02-26 23:54:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 79f95a81e4a1cea731d6eaeb6e1b1622 SHA-1: 6b80586b3bedb7753f0fe9f19335e7db5623b134 SHA-256: e2d2ea4bdaba6baf1c9f4a146eeb752b3f6f1a7fdd0f3cd1e1fd4b6d301cada3
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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://xezojetit.ru/wix?keyword=aigis+persona+3+sprites PDF link annotation
    • http://sfr-webmail.com/sda_fundamental_beliefsz64c3.pdfIn PDF document text
    • https://xixemoxutosiseg.weebly.com/uploads/1/3/4/4/134473276/kadetexux-tepavekuporeji-wenexit-nafavezo.pdfIn PDF document text
    • https://cdn.sqhk.co/fujalapevame/cCja7gd/fireboy_and_watergirl_5_elements.pdfIn PDF document text
    • http://mx50off.info/wojutugetuwezimejivovutipbpzi.pdfIn PDF document text
    • https://cdn.sqhk.co/disumuneriva/8RFiegh/jelojesofoveraw.pdfIn PDF document text
    • https://cdn.sqhk.co/jubawiwa/Z1iihyz/zimsec_o_level_history_past_exam_papers.pdfIn PDF document text
    • http://tersq.fun/marvel_23_movie_collection_dvde9ay9.pdfIn PDF document text
    • http://potenciy.xyz/what_is_dynamic_programming_in_sap_abap7kydf.pdfIn PDF document text
    • http://gimogorox.22web.org/beautiful_creatures_2000_cast.pdfIn PDF document text
    • http://astropsychology.site/lavibumelizidvrj2.pdfIn PDF document text
    • http://pupijepu.22web.org/ethical_hacking_tools_free.pdfIn PDF document text
    • https://ronupajowosoza.weebly.com/uploads/1/3/4/8/134871490/5dc111c55032b1e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tizidirek.rf.gd/statin_guidelines_summary.pdfIn PDF document text
    • http://wewimolu.epizy.com/desisosokus.pdfIn PDF document text
    • http://malakevuxe.epizy.com/binonuxose.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_off0000ec7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC7E 5108 bytes
SHA-256: 0d62535e3615dafd6e72a0e9843dfe2f8292f09887b7d3076921d2ba92fafc85
font_01_sfnt_off0000fdf6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDF6 15848 bytes
SHA-256: dd9a35dbe3ae933637f3485b23752888971a3d50d4100643d4444a0860604c9e

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