Malicious PDF — malware analysis report

Static analysis result for SHA-256 273a6d62907e2fff…

MALICIOUS

PDF

189.0 KB Created: 2021-05-24 21:40:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ebbc9bf619f74d9bdc0f0f9d05ff1fa1 SHA-1: d7fb7748bad67c179190b97f0d744e1f2295261c SHA-256: 273a6d62907e2fff5ca60c27b88b59ebebc6a4c259ed8e406c0c94678594bd02
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains an embedded URL that leads to a suspicious domain, likely intended to trick the user into visiting it for malicious purposes. The document body text, though partially garbled, includes a reference to 'Ferdinando toro pelicula' and 'wkhtmltopdf', suggesting a lure related to media content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9986

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://jumiwimov.ru/strik?utm_term=ferdinando+toro+pelicula
    • https://xotizirew.weebly.com/uploads/1/3/1/8/131855992/5745611.pdf
    • https://cdn-cms.f-static.net/uploads/4388165/normal_601f3a9f014d6.pdf
    • https://static.s123-cdn-static.com/uploads/4491933/normal_6008db3c46c41.pdf
    • https://cdn-cms.f-static.net/uploads/4376359/normal_600bfd5048e90.pdf
    • https://lupilizeranal.weebly.com/uploads/1/3/4/4/134460298/7c235.pdf
    • https://cdn-cms.f-static.net/uploads/4450047/normal_6053db1356f38.pdf
    • https://jumirusuvowelu.weebly.com/uploads/1/3/4/6/134632856/xatonulakipoxil_wevavepexa_morobitinok_gapowemip.pdf
    • https://cdn-cms.f-static.net/uploads/4491936/normal_600ff907cce8f.pdf
    • https://cdn-cms.f-static.net/uploads/4472186/normal_5fdab52fa9628.pdf
    • https://static.s123-cdn-static.com/uploads/4377403/normal_5ff17a3a64e95.pdf
    • https://cdn-cms.f-static.net/uploads/4369516/normal_605b60ef1481e.pdf
    • https://rejowuboxobe.weebly.com/uploads/1/3/2/6/132680789/9f17a5f2.pdf
    • https://lodofimedama.weebly.com/uploads/1/3/4/3/134327961/9054247.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/vibuvomomuv/depaw.pdf
    • https://s3.amazonaws.com/runuzitexokol/baliraxiwonixi.pdf
    • https://s3.amazonaws.com/paxuvagal/why_is_it_necessary_to_know_the_child_development_theories.pdf
    • https://s3.amazonaws.com/rodakarugupoko/24312531796.pdf
    • https://s3.amazonaws.com/moduxanakuri/degenerate_energy_levels_definition.pdf
    • https://s3.amazonaws.com/loranoduzuja/can_airpods_connect_to_android_tablet.pdf
    • https://s3.amazonaws.com/nuselufuzo/annual_return_format_under_companies_act_2013.pdf
    • https://s3.amazonaws.com/serogajugomiji/kesemovewavogurazavu.pdf
    • https://s3.amazonaws.com/kiwopusafize/b._e._d_course_information.pdf
    • https://s3.amazonaws.com/mokamoba/mr._coffee_iced_coffee_maker_with_reusable_tumbler_and_coffee_filter_kohls.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_off0002a457.bin
996ca1bedfb713834e911af437fa2c58d1915a3ed61b0155f144bafdd0795e11		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A457 4844 bytes
font_01_sfnt_off0002b4e1.bin
515a92fad54247e9974338d81151e55e32721edbfe030154ab1faac3d538d9b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B4E1 17256 bytes

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