Malicious PDF — malware analysis report

Static analysis result for SHA-256 1cc114c4349ebdba…

MALICIOUS

PDF

80.5 KB Created: 2021-02-23 23:50:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 001d003d41f9cc6f9ab4d02c25e6415a SHA-1: a202a409576fc31904ac35884ca7f96b628db476 SHA-256: 1cc114c4349ebdba8af048fe20d4881236365a5f44dd4cf9680826d2e07d88fe
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 'bologen.ru', which is likely a malicious domain used to host phishing content or distribute further malware. The document body, though heavily obfuscated, contains keywords that might be used as lures.

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://bologen.ru/wix?keyword=rank+3+lavish+suramar+feast+rank+3 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366004/normal_60278b002330b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393901/normal_601307b21c913.pdfIn PDF document text
    • http://fabimepela.22web.org/what_sleeping_position_is_best_for_menstrual_cramps.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479240/normal_602e1f8f569a5.pdfIn PDF document text
    • http://duxuzibeb.22web.org/adriano_celentano_confessa.pdfIn PDF document text
    • https://cdn.sqhk.co/wirowanorax/ig0jgha/moneygram_login_issues.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427287/normal_5fed604831ba3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456660/normal_6013f4b57c960.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476432/normal_5fe9c478c0be0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448549/normal_5fed95e81229d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418383/normal_5fd142a8e7401.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415331/normal_5fe2c9e8159e2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421336/normal_6025f53f9fadc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445731/normal_6018e64e553e7.pdfIn PDF document text
    • https://cdn.sqhk.co/zowonefaso/gd6he3M/nadulomifituzezobewibakap.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470985/normal_5fd78413ccac8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446380/normal_601eedda90d62.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://darefobimig.epizy.com/divided_by_2_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/vawoginele/alan_walker_songs_free_mp4.pdfIn PDF document text
    • https://s3.amazonaws.com/purixifusipelid/tewowev.pdfIn PDF document text
    • https://s3.amazonaws.com/gusule/tokurexokixovaworodopup.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_off0000ff74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF74 5304 bytes
SHA-256: a0b91350ea1e27dae0d23184c650d3589654d1eb002676b552e7a8873193d813
font_01_sfnt_off0001115e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1115E 10412 bytes
SHA-256: ba333a813fe51ddae550e6866682186910a91250bd810f5fb955486c2485d3d6

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