Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f201c7f79a3754e…

MALICIOUS

PDF

79.2 KB Created: 2021-02-27 08:48:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 68b2781578bb068e494a8f64788fccf2 SHA-1: f2c0b9d7f13985ab6e8745b7fe7a723d7817cfd4 SHA-256: 0f201c7f79a3754e5d26344ce57b0cc45bfe8295974cc482f778bcf8375efbda
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest an attempt to exploit user trust by presenting seemingly relevant information to encourage clicking the malicious link.

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://jacksth.ru/award?keyword=state+employees+credit+union+hours+black+friday PDF link annotation
    • http://bisipatelaloguj.66ghz.com/pagigakeweduvipig.pdfIn PDF document text
    • http://zizodoroluxonaf.sportsontheweb.net/lemasugopugezo.pdfIn PDF document text
    • http://my-credit.info/zulobebidexejpk45e.pdfIn PDF document text
    • http://nusururak.22web.org/redawadipixibebesoma.pdfIn PDF document text
    • http://mavpa.fun/50410148017vqh7f.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/rilexazejuzovep/genogofaxixixatezufat.pdfIn PDF document text
    • https://s3.amazonaws.com/jedadokuti/nugavod.pdfIn PDF document text
    • http://vapilazomenotak.rf.gd/xunatij.pdfIn PDF document text
    • https://s3.amazonaws.com/bidurudilidujug/58848303137.pdfIn PDF document text
    • https://s3.amazonaws.com/tumuzu/adobe_photoshop_cs3_full_version.pdfIn PDF document text
    • http://japefafe.epizy.com/e_track_installation_guide.pdfIn PDF document text
    • http://jajoxutevo.epizy.com/3044344458.pdfIn PDF document text
    • https://s3.amazonaws.com/bufipevuril/7860012937.pdfIn PDF document text
    • https://s3.amazonaws.com/legipalofi/lyrics_castle_on_the_hill__deluxe.pdfIn PDF document text
    • https://s3.amazonaws.com/divelikubapiwaj/best_drawing_animation_app_android.pdfIn PDF document text
    • http://pizubape.rf.gd/nadibamisegaz.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_off0000f7c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7C1 5804 bytes
SHA-256: 539d3ef098fa91a83bb802199c218495d461a0c39db2b2cca31a9e0da038083b
font_01_sfnt_off00010b59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B59 10520 bytes
SHA-256: 73f1aceae55e4ae2163a7e48483f6a049ef5becf1870ad81a8726aac4da5008b

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