Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e394b349bd4c3d3…

MALICIOUS

PDF

94.4 KB Created: 2021-03-19 22:28:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 006fb7722c0d04edd547840df615cf6a SHA-1: 1e5d59ce18c9cb5526eb35560b2a25c2e3309284 SHA-256: 5e394b349bd4c3d3ad1e79dbdae57d8fa3976f239f611c499c4109333ac1ea93
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains multiple embedded URLs, with the primary one being 'https://midufefew.ru/wix?keyword=kenwood+excelon+dnx692+user+manual', suggesting a phishing or malware distribution lure disguised as a user manual. The PDF structure and embedded URIs indicate an attempt to redirect the user to malicious content, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://midufefew.ru/wix?keyword=kenwood+excelon+dnx692+user+manual
    • http://juzufezike.mygamesonline.org/43323824536.pdf
    • http://fomijegi.mypressonline.com/mechanism_of_antigen_antibody_reaction.pdf
    • http://kolagozisil.mywebcommunity.org/18864711550.pdf
    • https://cdn-cms.f-static.net/uploads/4453129/normal_601b0b207f8d3.pdf
    • https://static.s123-cdn-static.com/uploads/4471114/normal_5fc777ab61ee0.pdf
    • https://cdn-cms.f-static.net/uploads/4495265/normal_60183874a2860.pdf
    • https://cdn-cms.f-static.net/uploads/4491153/normal_600e50d926b47.pdf
    • http://forovasax.medianewsonline.com/types_of_spelling_errors.pdf
    • https://cdn-cms.f-static.net/uploads/4408476/normal_604bc4ee5743d.pdf
    • http://pidijajuwupurop.medianewsonline.com/35109611354.pdf
    • http://mobufuwiwid.medianewsonline.com/file_tidak_bisa_dibuka_di_android.pdf
    • http://fonexewof.mygamesonline.org/vastu_shastra_book_in_english.pdf
    • https://static.s123-cdn-static.com/uploads/4389085/normal_5fcaa4e25508e.pdf
    • http://kafalukuwemi.mygamesonline.org/18517940402.pdf
    • https://cdn-cms.f-static.net/uploads/4381536/normal_5fe87d093b5fe.pdf
    • http://xexejevun.medianewsonline.com/hindware_sanitary_fittings_catalogue.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://lodumojokexiku.onlinewebshop.net/pozofun.pdf
    • http://zodiripek.myartsonline.com/merowukumixuwamomuvenoje.pdf
    • https://s3.amazonaws.com/tedowafomaru/91466639964.pdf
    • https://s3.amazonaws.com/waxegatulo/bepivozonodek.pdf
    • https://s3.amazonaws.com/lorugipopuxe/vawewemujijoj.pdf
    • http://tajiroxajesolut.atwebpages.com/gerhard_kittel_theological_dictionary_of_the_new_testament.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_off00012e62.bin
1c8a9aae3bfb23094c74dafcd68310aec2eb55de01b4f03a69945290117978ae
pdf-font-stream PDF embedded font (sfnt) at offset 0x12E62 5656 bytes
font_01_sfnt_off0001419a.bin
35631ab79ce569d03717722ad85b614f87366eaa0386ab8ffaf65c1abe14f12d
pdf-font-stream PDF embedded font (sfnt) at offset 0x1419A 11944 bytes