Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa5b3b6d9b177bbb…

MALICIOUS

PDF

74.7 KB Created: 2021-03-13 12:51:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 349b1a0f69241f4c0bce4053a8b2e14d SHA-1: 7cb498a3f9e507d4ee13cc6bd23f2aa58151c533 SHA-256: fa5b3b6d9b177bbb1687ecfa80dd3ddf852e275357ffed46de478b9791fa323d
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'botokaw.ru', which is disguised as a link for a game download. This suggests a phishing or malware distribution attempt. No scripts were extracted, but the PDF structure and embedded URL are strong indicators of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/123?utm_term=counter+strike+xtreme+v6+apk
    • http://rolorutebu.sportsontheweb.net/what_to_name_your_guy_friend_on_snapchat.pdf
    • http://zupedaganivo.66ghz.com/kasutelozalabadub.pdf
    • http://wumomotetidofe.getenjoyment.net/daxonajaburaludevumukonez.pdf
    • http://dupamineni.medianewsonline.com/management_science_the_art_of_modeling_with_spreadsheets_4th_edition.pdf
    • http://sovuradema.medianewsonline.com/2017_nissan_frontier_owner_reviews.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://sejanaxopuvogiw.epizy.com/worejaropatezuzame.pdf
    • https://s3.amazonaws.com/jufowokedunod/77315833530.pdf
    • https://uploads.strikinglycdn.com/files/309fa9fc-20fd-448e-bf40-10aca505b91e/benezitenoz.pdf
    • https://uploads.strikinglycdn.com/files/10ded312-95d0-4a5e-af6c-70a652103929/49361002308.pdf
    • https://uploads.strikinglycdn.com/files/3e1226ef-f723-4b1f-8d2b-3a6161a8643e/14465774233.pdf
    • https://uploads.strikinglycdn.com/files/62eefb70-5c8a-400b-9d84-aad60ab0f58a/lakemoxodogugogerivuf.pdf
    • http://nudoritane.atwebpages.com/the_seven_principles_of_the_happiness_advantage.pdf
    • http://pimirav.epizy.com/palindromic_rheumatism_treatment_guidelines.pdf
    • http://risegofona.rf.gd/admission_form_of_sainik_school_goalpara.pdf
    • https://uploads.strikinglycdn.com/files/d04aee49-fe0b-4b67-ae97-a6b1b7c30bef/samsung_model_un46b6000vfxza.pdf
    • https://s3.amazonaws.com/jepinebawo/blow_horn_ringtone.pdf
    • https://uploads.strikinglycdn.com/files/f44b7fc1-d55d-4e39-ab51-84c195d18cfb/phrasal_verbs_con_get.pdf
    • https://uploads.strikinglycdn.com/files/55778778-bfec-4675-80af-dbb044bd98d0/service_engine_soon_light_1991_chevy_s10.pdf
    • http://zutugidod.onlinewebshop.net/present_continuous_tense_worksheet_with_answers.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e5aa.bin
926fe3172066b279c6d733ad404aef0e3bbe856757a441b96f01a83eaffcf74c
pdf-font-stream PDF embedded font (sfnt) at offset 0xE5AA 5184 bytes
font_01_sfnt_off0000f73e.bin
8451544da596b4a9f91512b587c9e56368bc2d1b8dbd9dad5791be168b534070
pdf-font-stream PDF embedded font (sfnt) at offset 0xF73E 11932 bytes