Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3e769cf4ed2bf80…

MALICIOUS

PDF

77.5 KB Created: 2021-03-29 19:23:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 7299989647be183fc151969dd84485c6 SHA-1: d77c4493b58006c8f787f3dff171ae49b68a1d87 SHA-256: e3e769cf4ed2bf80ebb7898f5a25b8906650b17de14c7dfa3dd908df05b85f81
126 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9991

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://lozipotod.ru/wix?keyword=download+game+mod+apk+offline+terbaru PDF link annotation
    • http://kizibafa.iblogger.org/jusazokefasatorizexaje.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471488/normal_60109057c0603.pdfIn PDF document text
    • http://zobotalemogi.sportsontheweb.net/watilibukowolemuxi.pdfIn PDF document text
    • http://lezepubaj.iblogger.org/juturovazusevisuxe.pdfIn PDF document text
    • http://xilavinem.medianewsonline.com/5840159759.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451756/normal_6028e41b5d3d8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410695/normal_6020ffe7baddb.pdfIn PDF document text
    • http://bajifepeselok.sportsontheweb.net/que_es_ser_lider_nato.pdfIn PDF document text
    • http://joteruzawareba.iblogger.org/when_nietzsche_wept_movie_egybest.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481411/normal_6021768028fc3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/lokijuronig/78807888577.pdfIn PDF document text
    • https://s3.amazonaws.com/zosevid/mefumedame.pdfIn PDF document text
    • https://2a4065d7-883d-43e8-a524-7ce9aa4b4e88.filesusr.com/ugd/ccb1c6_0ef5f936267b4d989e8803502a8c4ae7.pdf?index=trueIn PDF document text
    • http://tujupifirafadus.myartsonline.com/pakapirobugujijijo.pdfIn PDF document text
    • http://gukutimaguvuzum.onlinewebshop.net/56063531096.pdfIn PDF document text
    • https://254a6a59-343e-4b7e-907c-c4819e171fff.filesusr.com/ugd/decf6f_7a77e60c7fd5456e9933f7f877a67749.pdf?index=trueIn PDF document text
    • http://wenulusevikofa.myartsonline.com/perimeter_and_area_of_polygons.pdfIn PDF document text
    • https://85fc0914-20e3-4f1c-be8c-de7e6f89f47e.filesusr.com/ugd/a44510_ea50105633fc4f8f829f4a9657b5f086.pdf?index=trueIn PDF document text
    • http://suvalomimo.atwebpages.com/weight_watchers_by_conair_4-user_memory_glass_body_analysis_scale.pdfIn PDF document text
    • https://s3.amazonaws.com/pusixa/what_does_non_programmable_thermostat_mean.pdfIn PDF document text
    • http://tevefetilojas.atwebpages.com/the_pleiadian_tantric_workbook.pdfIn PDF document text
    • http://nikuzemadol.rf.gd/lg_air_conditioning_remote_control_manual.pdfIn PDF document text
    • https://3f054cde-0430-4828-89d0-5f77035cf230.filesusr.com/ugd/d93890_8c7d5c0516764ada8a51e499c1f0a533.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/penefelomiju/887673837.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000edf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDF3 5476 bytes
SHA-256: aa1e19d4a48fd5d95b3e6ec3e0218c62549cd341d04e72ed52ab48857d43874a
font_01_sfnt_off00010097.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10097 11072 bytes
SHA-256: 80b96a9a83095c45ff1add37d6b52823c5371b8b99238bdb7fb5b220eac07e28

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