Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8d9fcbaf7a15263…

MALICIOUS

PDF

81.3 KB Created: 2021-04-17 14:05:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 47feaa7dfba7b51d929a6640f3bb7060 SHA-1: 45303984045022b7b9bc0f2459f754ec943cfa46 SHA-256: f8d9fcbaf7a1526353f782506baf3c09b7a8b77d3df4d2760e6e6bcf629c5ce3
96 Risk Score

Malware Insights

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

The file is a PDF containing multiple embedded URLs, one of which is associated with a phishing lure related to a coffee maker. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the detection suggest this PDF is designed to redirect users to malicious sites, likely for phishing or to download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://ponafet.ru/strik?utm_term=mr.+coffee+bvmc-sjx33gt+coffee+maker
    • http://muwiduvepobuz.mygamesonline.org/ayodhya_kanda_telugu.pdf
    • http://zagejudivavi.sportsontheweb.net/solidworks_course.pdf
    • http://mnogoturov.com/55501239476r6xcb.pdf
    • http://cabinetshub.xyz/1765298463247bb5.pdf
    • http://pannochki-art.com/6579988185436lsh.pdf
    • http://sopesukenapad.scienceontheweb.net/temperamento_e_caracter.pdf
    • https://cdn.sqhk.co/bukevexej/fhggeR8/wewatawepaz.pdf
    • http://tokio-2020.fun/635347684221241o.pdf
    • http://rozewevojalel.sportsontheweb.net/rug_doctor_parts_clean_water_tank.pdf
    • http://reweder.site/33418092826qcv67.pdf
    • http://thedefenseforge.com/63536125406ndj7a.pdf
    • https://cdn.sqhk.co/fefamuve/SNHgdib/67268107373.pdf
    • http://artistichomesolutions.com/tijekojibumadawajoxopoz2luxp.pdf
    • http://pofaduxiruk.getenjoyment.net/valot.pdf
    • http://kozugufasuroti.mygamesonline.org/tekurizikadenunaremegini.pdf
    • https://cdn.sqhk.co/wabajevebe/gfihjg1/27020618746.pdf
    • http://didazema.mypressonline.com/zulubu.pdf
    • http://fukerijinexin.mygamesonline.org/jubidi.pdf
    • http://edapog.online/menilefavubegitawetnpj9d.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fezipowivi.rf.gd/16376553929.pdf
    • http://mokijogibosa.epizy.com/40963454904.pdf
    • http://domuromu.atwebpages.com/38494766521.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_off0000ff94.bin
4384d10a0d9c267ba4d79d103918c5ef96c6d3cce0340deb2ea41300d40f5f2a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFF94 5808 bytes
font_01_sfnt_off00011378.bin
49e86a2f00a5e27e480db734a422b642920f404856d15f23ac1a0a763e5be3bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11378 11164 bytes

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