Malicious PDF — malware analysis report

Static analysis result for SHA-256 0419938e445b22bc…

MALICIOUS

PDF

82.1 KB Created: 2021-05-15 01:00:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: d4459f48ef9048d69924478cce6500e7 SHA-1: 8381eacbfecaca768843ac77c9e2808226836fc8 SHA-256: 0419938e445b22bc977d4a2e31aad45c205e5a4ce6c243a6df8d882ec90b3f4a
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely used to deliver a secondary payload or redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to common phrases.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://jottigo.ru/strik?utm_term=what+to+say+instead+of+alright PDF link annotation
    • https://cdn.sqhk.co/poladejug/dzJSihd/best_among_us_players_ranked.pdfIn PDF document text
    • http://xejepurefe.scienceontheweb.net/34592185096.pdfIn PDF document text
    • http://dupamineni.medianewsonline.com/dotutamoxibupefa.pdfIn PDF document text
    • http://demuxum.getenjoyment.net/53236810530.pdfIn PDF document text
    • http://vozivovog.scienceontheweb.net/books_similar_to_cormac_mccarthys_the_road.pdfIn PDF document text
    • http://xamoxipuwizutux.scienceontheweb.net/what_are_the_major_sins_in_christianity.pdfIn PDF document text
    • https://cdn.sqhk.co/dojiwazufek/fjgjSkb/82285408629.pdfIn PDF document text
    • http://zixudivibudizu.scienceontheweb.net/memad.pdfIn PDF document text
    • http://pazujiz.mygamesonline.org/quiroga_el_almohadon_de_plumas.pdfIn PDF document text
    • http://vikiduxa.mywebcommunity.org/kung_fu_panda_2_movie_download_in_hindi_filmywap.pdfIn PDF document text
    • https://cdn.sqhk.co/tabakotodi/spkjfgj/rexeliri.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://uploads.strikinglycdn.com/files/28cf59a8-79ac-4452-9fec-da229ca66dfb/stephen_king_thinner_book_ending.pdfIn PDF document text
    • https://s3.amazonaws.com/petuzutemixuvod/computer_related_full_form_in_english.pdfIn PDF document text
    • https://s3.amazonaws.com/genukopapovixo/chiranjeevi_gang_leader_movie_songs.pdfIn PDF document text
    • http://wegugoleta.onlinewebshop.net/xewaziwu.pdfIn PDF document text
    • https://s3.amazonaws.com/wekibik/9056353657.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/502f7ee4-6958-49a5-8c7b-d6d157fc1c11/xudugasasofitagogudefag.pdfIn PDF document text
    • https://s3.amazonaws.com/jupoti/deadpool_4k_wallpaper_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/bewibiwat/39008487871.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e1f3d307-52b9-4936-9c3d-e1f7c5b08d09/93058920687.pdfIn PDF document text
    • https://s3.amazonaws.com/xepululejiwof/10572358804.pdfIn PDF document text
    • https://s3.amazonaws.com/seriposuj/42123595425.pdfIn PDF document text
    • https://s3.amazonaws.com/fajujiju/police_scanner_android_software.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_off0000f425.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF425 5072 bytes
SHA-256: a7d0e4a9bd661347c9742465b75b05391ee73bc5b7943b95f93f87dd62ce1f70
font_01_sfnt_off00010568.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10568 11096 bytes
SHA-256: 01bdf43f9af0dfef39570a6ff3b91f82227ac5c35ed4cfdcf05967c8dff07682
font_02_sfnt_off00012b22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B22 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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