Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e7a9e5186301e00…

MALICIOUS

PDF

83.5 KB Created: 2021-04-03 05:45:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: a1bafadb11fe49128ce2956f3a3eef02 SHA-1: 744c7d737a9471fd86940fa123815b2897993e23 SHA-256: 6e7a9e5186301e00fc1a87a6e3f15ca930ff6d8526b2f14cd137e9d3305f4345
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jottigo.ru/strik?utm_term=me+and+earl+and+the+dying+girl+film+review PDF link annotation
    • http://tozepefaj.iblogger.org/tevonelorawelezonesivimiv.pdfIn PDF document text
    • https://cdn.sqhk.co/nogedapuvul/Io6ijMc/70025851416.pdfIn PDF document text
    • http://vawabipoxe.sportsontheweb.net/92892183987.pdfIn PDF document text
    • http://gigezesuzobe.getenjoyment.net/social_media_marketing_company_profile.pdfIn PDF document text
    • http://tozaworewinox.mywebcommunity.org/86150953562.pdfIn PDF document text
    • https://cdn.sqhk.co/sozedikepasu/hj2agL6/lenovo_chromebook_c340-_15_review.pdfIn PDF document text
    • https://cdn.sqhk.co/pozigafo/gJhjgdk/61273973487.pdfIn PDF document text
    • http://desokore.medianewsonline.com/hindu_baby_boy_names_list.pdfIn PDF document text
    • http://nokojatagi.mywebcommunity.org/cracker_barrel_menu_breakfast.pdfIn PDF document text
    • https://cdn.sqhk.co/pobumepova/jhjiggN/sky_scream_roller_coaster_facts.pdfIn PDF document text
    • http://kekewawoxugar.sportsontheweb.net/writing_equations_and_inequalities_from_word_problems_worksheet.pdfIn PDF document text
    • http://mapugukabazewu.scienceontheweb.net/garmin_nvi_255w_4.3_inch_gps_navigator.pdfIn PDF document text
    • http://xasekijig.mypressonline.com/kuzugubofi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dudorotedebapoj.epizy.com/25353662296.pdfIn PDF document text
    • http://jozobudesurarab.onlinewebshop.net/beethoven_appassionata_3rd_movement.pdfIn PDF document text
    • https://34886cf3-15ed-44db-93e8-8979dc7c4cd7.filesusr.com/ugd/ea2c45_efc6666d660e49148c84bed713522230.pdf?index=trueIn PDF document text
    • http://novogizeboje.myartsonline.com/wunenebufozatakuzuvula.pdfIn PDF document text
    • https://2791e1c6-719d-47aa-bdc5-1556df251b63.filesusr.com/ugd/7757c5_bfaf956dbfc74d5ea1291d68fc385ad5.pdf?index=trueIn PDF document text
    • https://7a9095e9-4ba3-4ff7-9406-a75d0382ce8a.filesusr.com/ugd/db93e9_04dc9f98305c4e458bea5f2d3f3dc5ca.pdf?index=trueIn PDF document text
    • https://8dfd47f4-e591-4377-92a3-bdbf91d41e5a.filesusr.com/ugd/a58b01_e80efad9956c41d5a0191183f1dc7f57.pdf?index=trueIn PDF document text
    • http://josuremase.rf.gd/nezijonezogimojip.pdfIn PDF document text
    • https://ecf1b359-4982-44d9-836f-7e6f5fec4aa1.filesusr.com/ugd/da15c8_de1130eba79448f491eab9863505071a.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001047c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1047C 5400 bytes
SHA-256: a857a25e22eff3213fca0ac4d51ddbff6a25fc33f1bafbda6b39b9736c377687
font_01_sfnt_off000116d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116D9 12468 bytes
SHA-256: d6cec37418d1ca8521f18f1efcc274ee19706530299c1525fa3eb0f82149bef2

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