Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7b0a91b8e4268ae…

MALICIOUS

PDF

80.1 KB Created: 2021-03-08 23:47:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 572caa5d7a24f4b371605c32f1f8b8d4 SHA-1: d3b9bdd4669aa2f73464ea6da59d3d16de6a4ee9 SHA-256: d7b0a91b8e4268ae2ee93a9329e3fe68a653347a2f9a1ff6a56209475386ad14
126 Risk Score

Malware Insights

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

This PDF document was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many pointing to disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The presence of these links and the overall detection indicate an attempt to distribute malware or conduct phishing attacks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://lozipotod.ru/aws?utm_term=applying+zone+of+proximal+development+in+the+classroom PDF link annotation
    • http://gejejasofubi.mywebcommunity.org/what_does_spiral_curriculum_mean.pdfIn PDF document text
    • https://cdn.sqhk.co/sutazojawote/eOFhjsf/guvexoruz.pdfIn PDF document text
    • http://kazimibi.getenjoyment.net/divedofobuwazodupab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379846/normal_602ab6cacb2f5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406216/normal_5ff5871cbdf02.pdfIn PDF document text
    • http://ruxuzosok.mywebcommunity.org/82740307264.pdfIn PDF document text
    • https://cdn.sqhk.co/kosifodalab/d8Xidx7/fallout_shelter_special_rooms.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445326/normal_6007a525a94bb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473056/normal_5fcc7dfe6d469.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481695/normal_602249638fb0c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390381/normal_5ff0b60d227bd.pdfIn PDF document text
    • http://wedavinonuvovu.22web.org/57448495285.pdfIn PDF document text
    • https://cdn.sqhk.co/gozolijitow/gejhhcL/52867355982.pdfIn PDF document text
    • http://bajifepeselok.sportsontheweb.net/3846116950.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://f4dd034e-00c7-465c-b850-fb2d75accad5.filesusr.com/ugd/769f78_504b5d2603e74c2abcfb6533352dc17e.pdf?index=trueIn PDF document text
    • http://zijozuf.epizy.com/list_danielle_steel_books_chronological_order.pdfIn PDF document text
    • https://e0d0d77b-4c00-4265-bc22-f0cc5cf11ada.filesusr.com/ugd/957eb4_affeec317aad4dad80b992f93ce3a2a5.pdf?index=trueIn PDF document text
    • https://247e77cc-5367-4382-8586-7c5891409f42.filesusr.com/ugd/2dbf5a_8366097d1674436ba668a1bc91f7d6ae.pdf?index=trueIn PDF document text
    • http://zevofelajasuz.epizy.com/puvofogemesivonegum.pdfIn PDF document text
    • https://f770b3d7-c897-40e0-9323-5ad0abd91552.filesusr.com/ugd/1fa6dd_212f6e3ec49e4c53b90176c5d135690c.pdf?index=trueIn PDF document text
    • http://dokudaruriwiv.atwebpages.com/black_flag_cordless_bug_zapper_review.pdfIn PDF document text
    • https://e3e1c2aa-7f41-47b0-8c2f-d823cb48b857.filesusr.com/ugd/7598fa_a738d986a2b14b14afcd853fa3b4576f.pdf?index=trueIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ebd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBD3 3704 bytes
SHA-256: 92f7dd155fde9868310cf24cdff4da82d1d006577afe30b906c142ca37b1a299
font_01_sfnt_off0000f914.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF914 5836 bytes
SHA-256: 735a2d43949fd4876b3c5e082f715b741b3c1d635747e7804bb81b3e4d97ca26
font_02_sfnt_off00010cee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CEE 10968 bytes
SHA-256: a338c3309c2ec4365e9bdb59ad2c63e35a87b18841d6ebd7f75c5e1f014222e5

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