Malicious PDF — malware analysis report

Static analysis result for SHA-256 09ea93b910ce6b77…

MALICIOUS

PDF

77.8 KB Created: 2021-03-25 01:02:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 35006ec113d5898ea5acf0a744026f05 SHA-1: b57465e474b0b61f5c576231c218f7b4ae076cf8 SHA-256: 09ea93b910ce6b774c66d9341b79ed3bf25a5d131971e004807118c3508644d0
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a high-confidence ML classifier and ClamAV detection as a phishing trojan. The document contains numerous embedded URLs pointing to disposable hosting, indicating a link farm or phishing lure. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect users to malicious sites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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=mutualism+involving+the+arctic+foxes PDF link annotation
    • http://onsideball.info/penetrating_abdominal_traumabr7nu.pdfIn PDF document text
    • http://mnatural.space/the_hierophant_tarot_love_futurewywqj.pdfIn PDF document text
    • http://instas.site/fesijutikotubawawoxufib86jkm.pdfIn PDF document text
    • http://world-wildshop.com/what_are_the_main_causes_of_conflicts_in_africad91ug.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378831/normal_5fe037a35da60.pdfIn PDF document text
    • http://laithub.pro/19889555075rkcx0.pdfIn PDF document text
    • http://supsun-aero.com/el_amor_en_tiempos_de_colera_espanolydg3m.pdfIn PDF document text
    • http://clubstore.pro/sunfly_362_torrent0v6om.pdfIn PDF document text
    • http://0fruits.space/tovamiraravopukeduwogifh733n.pdfIn PDF document text
    • http://eagleaff.com/what_is_the_theme_of_huckleberry_finnfjhjy.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408340/normal_602a4527be50f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455377/normal_6031461912987.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412905/normal_6043ebc5d5d9e.pdfIn PDF document text
    • http://podjem2.club/secuestrada_anna_zairesq6s46.pdfIn PDF document text
    • http://help-ruleviolation.com/13041567229n9lg7.pdfIn PDF document text
    • http://znalomstvavip.site/himnos_dela_iglesia_de_jesucristo_delos_santos_de_los_ltimos_das_en_espaolfx45o.pdfIn PDF document text
    • http://urro-hu.com/sazuxokunode6735p.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://c6926203-1eb9-401e-9afa-11f61f201807.filesusr.com/ugd/685707_444f209fb668416d9f3e06b4d2d0318f.pdf?index=trueIn PDF document text
    • https://a72a44ae-2aae-4d6a-a6c4-235301d0a62e.filesusr.com/ugd/57436b_8132f6f004e149b4a4c0e1a01bc7780c.pdf?index=trueIn PDF document text
    • https://486a928f-df87-4682-b39c-9199637d78f9.filesusr.com/ugd/982a49_77bc4638752b43b7962f6aea80c2e7a4.pdf?index=trueIn PDF document text
    • https://3fb740b9-71d8-4183-8edb-de11b68c0a29.filesusr.com/ugd/1fbf8b_ad6893ea184041739da185c0477734f2.pdf?index=trueIn PDF document text
    • https://b0c090b1-cb02-46d8-8a69-3fb9d82636b6.filesusr.com/ugd/4dbf3f_3b4591828ba34c9d918b4b966d90725d.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f236.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF236 5428 bytes
SHA-256: f605192ec46bbb9ef10a5ec6cdf4a2efca295ff07f48ee1ef66b44fc70316463
font_01_sfnt_off0001049e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1049E 10956 bytes
SHA-256: 78b12ce9b5fe3c0b7f77d8ff740467e28add34f3c2e13b935d8c24849ab96196

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