Malicious PDF — malware analysis report

Static analysis result for SHA-256 fccd1e06503dc967…

MALICIOUS

PDF

71.5 KB Created: 2021-02-16 00:15:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 8e93d940aebc5fbc8596d712f58c4d2f SHA-1: 40143b7bb4e221e22082e30fe8c5dc6b32654da1 SHA-256: fccd1e06503dc9670161ac468802b6f118c1a9af9c2604ad56cb6ace6f0daf39
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, indicating a high likelihood of malicious intent. The presence of an embedded URI pointing to 'bologen.ru' suggests a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URI are strong indicators of a malicious document designed to trick users into navigating to a potentially harmful external resource.

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://bologen.ru/wix?keyword=ff14+scrips+guide PDF link annotation
    • https://cdn.sqhk.co/tutabalero/dCfrhc7/multistream_twitch_mixer.pdfIn PDF document text
    • https://cdn.sqhk.co/nadipozow/bxvjfgg/warriors_orochi_3_characters.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449012/normal_600e88bff1a01.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478393/normal_6012e2f9cb8e3.pdfIn PDF document text
    • https://cdn.sqhk.co/mitugejaxel/4XbaIEg/19702352519.pdfIn PDF document text
    • https://cdn.sqhk.co/koluvukirate/ja3zifd/formula_1_drive_to_survive_season_2_rating.pdfIn PDF document text
    • https://cdn.sqhk.co/nosisatoved/hgepyjg/nuvaremuwusuwi.pdfIn PDF document text
    • https://cdn.sqhk.co/jimumakevaji/dughkGz/burnin_rubber_5_airconsole.pdfIn PDF document text
    • https://cdn.sqhk.co/dapumexader/idOmhcU/pofikafojorevo.pdfIn PDF document text
    • http://nenavukatebofaf.22web.org/14843461449.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455883/normal_5fd780c759ce9.pdfIn PDF document text
    • https://cdn.sqhk.co/wemorapi/LgPhwhj/75080812861.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417213/normal_6017c8194c315.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413978/normal_5fde6ec69f2f5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414166/normal_5fcefa3d374a9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476925/normal_5fca7d8631cef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447097/normal_5fe62b1acb5c7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482863/normal_5ff7afeb37760.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rimutapewite.rf.gd/44330043187.pdfIn PDF document text
    • http://kigexozuzexozo.rf.gd/nujujafekames.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_off0000dcc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCC8 5176 bytes
SHA-256: e7b1c820ec864c28552a31efdc657ed749b96f27ce709e150943bcc9de0b5bee
font_01_sfnt_off0000ee89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE89 10196 bytes
SHA-256: b9fbd4e7bd66bc788e099339a829783b24ffbf3d627dc55f69248d35908b62d9

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