Malicious PDF — malware analysis report

Static analysis result for SHA-256 219e0d2f9677b937…

MALICIOUS

PDF

84.7 KB Created: 2021-03-13 22:08:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 807b68787ce50450b5c8c5ea16652d47 SHA-1: 5a22d139cc5617a259e2711b7f3317badc691dbd SHA-256: 219e0d2f9677b937100c596a4547f1445c51737fdc8be68bc71468db95c68dfe
186 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, many of which point to disposable hosting and are designed to create a link farm. The primary URL, 'https://lozipotod.ru/wix?keyword=sarah+jt+leroy+pdf+download', suggests a phishing or scam attempt disguised as a search result. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/wix?keyword=sarah+jt+leroy+pdf+download PDF link annotation
    • http://tulavesew.getenjoyment.net/composition_of_functions_worksheet_answers_kuta_software.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407784/normal_602f0ab0c582a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393022/normal_5ffd9bc62d3b6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469836/normal_600ebc212794f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447878/normal_6011d4baa2c2f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460680/normal_6046e4f85051c.pdfIn PDF document text
    • http://dafagaketa.sportsontheweb.net/how_to_use_bissell_proheat_pet_spot_cleaner.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://rukosivujuxu.atwebpages.com/the_book_of_secrets_full_movie.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e50b1011-4030-4dc1-a42e-61fc9495384f/hp_officejet_pro_8620_printhead_error_code_0xc19a0003.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26d1fd30-4e1d-41e1-8fcb-1d2fba8476af/guwaji.pdfIn PDF document text
    • https://s3.amazonaws.com/fejenijovekozu/anet_a8_3d_printer_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f766a44e-de6e-4671-8f2f-ff16a2487a40/beats_solo_2_wireless_one_side_not_working_on_bluetooth.pdfIn PDF document text
    • https://7fca5364-97a1-4441-b76e-d2c429a59218.filesusr.com/ugd/735424_f450e283e92040f29e7c6026a5569d94.pdf?index=trueIn PDF document text
    • https://8ed62699-7d02-4439-b935-4286882ef7d4.filesusr.com/ugd/229b11_a527de3feed247618f9b44d4ad43d857.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/telasebisu/how_to_reboot_lorex_dvr.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c9f89d3-e53a-43aa-82f9-a996701a5109/jafojiriropenixit.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ffa0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFA0 5064 bytes
SHA-256: f06658276235322f9fd95b46a366b4361bcf990814316c249dd09ede2679f48d
font_01_sfnt_off000110ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110EA 11364 bytes
SHA-256: 91190edf43b6e27934ed891993025de9c7b3477b6f897dd8d9e87253a367834b
font_02_sfnt_off000137a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x137A2 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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