Malicious PDF — malware analysis report

Static analysis result for SHA-256 569c9adf49203161…

MALICIOUS

PDF

87.2 KB Created: 2021-04-29 17:23:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 38310d9fced0f390760b2c7a1d61d347 SHA-1: 489e88086ae985fba39cd9bf818857b257dce12a SHA-256: 569c9adf49203161b99f8e71b1d43578cd1f60a23e2cbddc6cc4b4e2345ac130
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, identified as a link farm. The primary URL, 'https://lozipotod.ru/strik?utm_term=2002+polaris+xplorer+400+for+sale', suggests a potential phishing or SEO manipulation attempt. The presence of a ML classifier flagging it as malicious and ClamAV detection further supports its malicious nature. No scripts were extracted, but the structure indicates a malicious document designed to redirect users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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/strik?utm_term=2002+polaris+xplorer+400+for+sale PDF link annotation
    • http://pro-komp-master.website/dabebusokidadatj9w.pdfIn PDF document text
    • https://cdn.sqhk.co/sirepajaku/hqQBDUJ/jipojujifapejagaguzubomi.pdfIn PDF document text
    • https://cdn.sqhk.co/toledexipez/XjeNTsY/weboz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408976/normal_6052ef2e17aa9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473618/normal_5fd6ac51cdb6b.pdfIn PDF document text
    • http://helpcontactform.com/honeyguide_bird_information_in_marathi5120t.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369775/normal_5ff3bb5fb3aa3.pdfIn PDF document text
    • https://cdn.sqhk.co/zukasedu/jbBhgjh/xcom_enemy_within_android_gameplay.pdfIn PDF document text
    • http://fusitekive.iblogger.org/79580439645.pdfIn PDF document text
    • https://cdn.sqhk.co/kupawusel/hgftXih/medical_quiz_questions_and_answers_uk.pdfIn PDF document text
    • http://zipogagu.iblogger.org/godobuxaritaludev.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0b939a6-cf6d-4699-b8f9-e63e43ea1976/medx655dw1_not_heating.pdfIn PDF document text
    • https://0e627107-309b-4451-a84d-e7064c41fccd.filesusr.com/ugd/04c368_673c409501544125b426673a0f61df18.pdf?index=trueIn PDF document text
    • https://8be317c1-93d6-4444-9a1c-030c84ae583f.filesusr.com/ugd/709942_f293cb1cec394a7ea87786d413b9d109.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/0805d498-2cf7-4d4d-bca3-5d2baabeb5c6/the_knife_of_never_letting_go.pdfIn PDF document text
    • http://dijakobikegexi.epizy.com/34115196791.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53e8bbab-e95f-436e-945c-8f1ae3b6d17b/xepafaxibidipetokig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20f3dbf4-3171-4b83-956f-d45b801f08c2/26453182658.pdfIn PDF document text
    • http://widitedofirok.rf.gd/apqp_software_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba770523-4140-4b46-bc3c-12ea8b7c2319/engineering_mechanics_dynamics_8th_edition_solutions.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f705.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF705 5228 bytes
SHA-256: 378694aea8b656b38fd98a209ccd00fd28b0feb4065c0827f0111222aa2cfea3
font_01_sfnt_off000108e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108E1 2192 bytes
SHA-256: 9061a99c3400964b3a1efdb3a8e52690a853d5d259220e92381436734ad09cab
font_02_sfnt_off00011266.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11266 11388 bytes
SHA-256: 912c9959d8dbaf7cf84e9c1b7229881f05e9153d698f4b5fdc5dda1a1aba0330
font_03_sfnt_off00013971.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13971 16204 bytes
SHA-256: a95eff378c135b1ab40d10b3cd1da1bafbc07f86005f57898d079c90d712ddbd

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