Malicious PDF — malware analysis report

Static analysis result for SHA-256 486e7b0ab3aff495…

MALICIOUS

PDF

80.4 KB Created: 2021-05-12 01:55:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 2407d9e0172030487d5e48d13544e68e SHA-1: 4cd2c9c8b606e0cdec2815f705d40d1016aedaec SHA-256: 486e7b0ab3aff4950b6c4266fe27dc7944ccd1d9e0a1befccba3045b73915d09
186 Risk Score

Malware Insights

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

This PDF file contains a large number of external links, many hosted on disposable domains, suggesting a link farm or phishing attempt. The ML classifier and ClamAV detection strongly indicate maliciousness. The embedded URL 'https://botokaw.ru/strik?utm_term=who+is+marla+maples' is likely part of a phishing or scam campaign, aiming to redirect users to potentially harmful content.

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://botokaw.ru/strik?utm_term=who+is+marla+maples PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4490370/normal_605c621b604ca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371020/normal_601709465165d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470537/normal_5fd7d22ea29ef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368497/normal_606c91a195e0a.pdfIn PDF document text
    • http://buwubaled.mywebcommunity.org/service_manual_evinrude_e-tec_115-200_hp_2008.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455179/normal_5fe8d00e02dbd.pdfIn PDF document text
    • http://perorivatifurar.iblogger.org/kazusaworasaniluvobudoj.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
    • https://fefcf4f0-bf52-4086-adb3-b788df03f7bd.filesusr.com/ugd/da9d4c_2b50c881007c4ce19c3c1acf985fdd98.pdf?index=trueIn PDF document text
    • http://ketixidefa.epizy.com/mechanical_engineering_degree_uta.pdfIn PDF document text
    • https://493f174a-a540-412c-bacb-e5b7b26cbfcf.filesusr.com/ugd/95bb70_d409694291a149619082a74d2f5cbe8c.pdf?index=trueIn PDF document text
    • http://xefesogojodegu.epizy.com/bombay_movie_bgm_music.pdfIn PDF document text
    • https://62dace35-232c-43a2-b3e8-6cf19ad57148.filesusr.com/ugd/42ae31_135f29820d7f4524841ae764aad3a425.pdf?index=trueIn PDF document text
    • http://fazesiviwor.rf.gd/employee_turnover_calculation_spreadsheet.pdfIn PDF document text
    • http://futakanawus.onlinewebshop.net/ganamrutha_bodhini_sangeetha_bala_padam_english.pdfIn PDF document text
    • https://651f5d5e-5f42-4fb0-8380-889764ca350f.filesusr.com/ugd/b2f7c1_40b4e4f842a24c4fbf79a2eb48c8f955.pdf?index=trueIn PDF document text
    • https://d321836a-1bf8-47c4-b4d3-67fe1e7f0250.filesusr.com/ugd/33ab24_85f6d820f3324a55989031348009de76.pdf?index=trueIn PDF document text
    • http://pajotevijonawo.rf.gd/65804025147.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_off0000ec57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC57 4672 bytes
SHA-256: 91575e11388285cda3c0aee142eb8cd22148fe6b4b07bfc6fc616094d00b2dc4
font_01_sfnt_off0000fc2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC2C 12592 bytes
SHA-256: ff508379b5f126ba028ba44433a19b8915b87275758d10f6d1721548268b7e54
font_02_sfnt_off00012575.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12575 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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