Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc56594a4ca4616b…

MALICIOUS

PDF

74.7 KB Created: 2021-04-05 13:28:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 81e5e0ec0857f02d75b864461c65358b SHA-1: ddcd6b04bffadfc64fbf13b3ffa98bffff13e5f8 SHA-256: cc56594a4ca4616bc5eb8231e90bb6e65ae77fcfa9faa9e3a2f9280613c33847
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URI pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also strongly flagged this PDF as malicious. The document body contains garbled text but the presence of the external URI suggests an attempt to redirect the user to a malicious site for further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jacksth.ru/wix?keyword=dudleyville+road+dadeville+al
    • https://cdn.sqhk.co/rolileduvof/dhkbgdV/vojimumasas.pdf
    • https://zepitobazelaki.weebly.com/uploads/1/3/4/6/134619491/db99c4f71428.pdf
    • http://familyit.info/44611310580hv0y8.pdf
    • http://vuvuga.xyz/67286959362hmz2g.pdf
    • https://cdn.sqhk.co/zanotunuzi/geRcyii/allegiant_discount_code_2020.pdf
    • http://ourfutures.space/74188085422g7mty.pdf
    • https://teguvubab.weebly.com/uploads/1/3/4/3/134347924/f4c539.pdf
    • https://cdn.sqhk.co/letarezetap/PibLjcP/clothes_worksheets_clipart.pdf
    • http://copyright-infringement.business/grep_commands_in_unix17lrk.pdf
    • https://cdn.sqhk.co/xenetomapum/RLS9MQ8/epic_games_support_rocket_league.pdf
    • https://tifegoguxefufi.weebly.com/uploads/1/3/1/6/131637953/fexewu.pdf
    • https://cdn.sqhk.co/vavewiminiv/8YxlhbE/antique_slot_machines_for_sale_near_me.pdf
    • https://cdn.sqhk.co/fodexuxefeba/78gfijY/non_catholic_christian_meaning.pdf
    • http://hermidkovo.info/chronicles_of_narnia_prince_caspian_game_downloadnn8cs.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/gumegulaxi/30811604956.pdf
    • https://2f2ab42d-e0b4-4bd3-aa50-2430da1ff5fc.filesusr.com/ugd/eaf48f_ff0bfb989acd412da3433a9951f6c512.pdf?index=true
    • https://s3.amazonaws.com/legapatatezisa/nazugo.pdf
    • https://s3.amazonaws.com/sutawowirosuvuv/73723678828.pdf
    • https://c7bff75e-0a19-4817-9d47-fca4cf08161b.filesusr.com/ugd/3b6424_70b129d0e92449bab85d782462623503.pdf?index=true
    • https://s3.amazonaws.com/lerezazo/16248044352.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_off0000e943.bin
5ccd5632efd2f688e64967353b9fad3c7a2ebac334de4f1cc27e93f2d8dd4f8e
pdf-font-stream PDF embedded font (sfnt) at offset 0xE943 4804 bytes
font_01_sfnt_off0000f9b3.bin
c96529e2d098ac2aaa53d448afd25c7a295e2c18e30ff5c1417c1d3c5672e57d
pdf-font-stream PDF embedded font (sfnt) at offset 0xF9B3 10448 bytes