Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ccb7fd174975c74…

MALICIOUS

PDF

75.3 KB Created: 2021-02-27 18:23:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 3839e319213d41ad1d4a58471a63d8b0 SHA-1: 3da06ad283188813d275a674f1c3fe52a3d730aa SHA-256: 2ccb7fd174975c74b2b425599459b20a185781a8930bc7b4ec52cdd5832a61c4
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. ClamAV and ML classifiers also flagged this PDF as malicious, specifically identifying it as a phishing trojan. The document body, though heavily obfuscated, suggests a technical pretext related to 'Git bash windows command not found', which is likely a lure to disguise the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://gimoguvi.ru/strik?utm_term=git+bash+windows+command+not+found PDF link annotation
    • https://cdn.sqhk.co/lesasafo/PVjiChb/kidcity_playing_wwe_2k18.pdfIn PDF document text
    • https://cdn.sqhk.co/jufenakajo/hf0wHkd/1118790162.pdfIn PDF document text
    • https://cdn.sqhk.co/romilononove/fQU9XRX/mega_farmers_market_adelphi_md.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382631/normal_5fd26f5f7c959.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471096/normal_5fda66a01b5aa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367937/normal_5fd69fb06fe17.pdfIn PDF document text
    • https://cdn.sqhk.co/dikapagoloza/ihchax1/62481653176.pdfIn PDF document text
    • https://cdn.sqhk.co/fisoxinizo/KrxLgfu/girl_superhero_coloring_books.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403681/normal_60251a077e92c.pdfIn PDF document text
    • https://cdn.sqhk.co/fuwunikuneg/b1if2xh/at_t_u_verse_customer_service_number_internet.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/viregujipowuru/sanaw.pdfIn PDF document text
    • https://s3.amazonaws.com/lakujusitejojet/1672058112.pdfIn PDF document text
    • https://s3.amazonaws.com/dezajok/vezugeganol.pdfIn PDF document text
    • https://s3.amazonaws.com/dukajevo/duguxejewuso.pdfIn PDF document text
    • https://s3.amazonaws.com/zarelusipofox/jurassic_park_tamil_movies_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/rakabexozu/dantes_inferno_gameplay_psp.pdfIn PDF document text
    • https://s3.amazonaws.com/metakibeme/gubefop.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_off0000e8a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8A0 5396 bytes
SHA-256: 2a2fdc6b92c075c149d713101eac3acb6f42ab0dd89d3ae931834eed3bbcad5f
font_01_sfnt_off0000faec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAEC 10820 bytes
SHA-256: 845951cd5947964ee977a4a904f64702a9c0e53333a03a86bc9913b66a9d9a65

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