Malicious PDF — malware analysis report

Static analysis result for SHA-256 2cb1132ea49226b2…

MALICIOUS

PDF

78.4 KB Created: 2021-02-07 11:06:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 04891aec04965e175a08fabe5e620be0 SHA-1: 4e77db7f64f19e0400a42e292d1c54e6991bdb31 SHA-256: 2cb1132ea49226b2aa62064bf1b70e4014d5a099059dcaf3fee43ed55373f50c
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, with a high risk score. It contains an embedded URL pointing to 'bologen.ru', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to product advertising.

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/123?utm_term=push+up+jeans+zara PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4416656/normal_5fc9cacc8ff1f.pdfIn PDF document text
    • http://astrology-personal.online/scorch_trials_bookrawcy.pdfIn PDF document text
    • http://milanomodaitaly.site/benopusesipabupu7drg8.pdfIn PDF document text
    • http://shoop-fp.ru/ciclo_rankine_ejercicios_resueltosa4y8i.pdfIn PDF document text
    • http://kukushpa.fun/watch_south_beach_tow_free313og.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/libosokune/51743430440.pdfIn PDF document text
    • https://s3.amazonaws.com/xetasif/rareluraparojodo.pdfIn PDF document text
    • https://s3.amazonaws.com/pokorevalaxex/mercedes_benz_certificate_of_conformity_uk.pdfIn PDF document text
    • https://s3.amazonaws.com/vebisop/21506664392.pdfIn PDF document text
    • https://s3.amazonaws.com/dazutun/country_of_origin_labelling_australia_style_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/polojuliragam/outlook_for_mac_desktop.pdfIn PDF document text
    • https://s3.amazonaws.com/lopeteb/critical_analysis_essay_apa_format.pdfIn PDF document text
    • https://s3.amazonaws.com/xeropizuwe/najozi.pdfIn PDF document text
    • https://s3.amazonaws.com/pazatuv/beyonce_dancers_formation_tour.pdfIn PDF document text
    • https://s3.amazonaws.com/nefagolom/lotupuwarafegemoterebom.pdfIn PDF document text
    • https://s3.amazonaws.com/dusubonifu/1478757041.pdfIn PDF document text
    • https://s3.amazonaws.com/jeworurowam/lafiresewegezirak.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e943.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE943 4644 bytes
SHA-256: 745cc40c81cd35a225b3e494229e8324e5c0e9ac9e5458a687a5b4f1ba720fc9
font_01_sfnt_off0000f8f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8F9 11012 bytes
SHA-256: 090729f453f01f0cbb71fe9c2c2d07a0636ec21d536602772253fe8de7d14389
font_02_sfnt_off00011ea8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EA8 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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