Malicious PDF — malware analysis report

Static analysis result for SHA-256 fca3e3800333fde5…

MALICIOUS

PDF

74.1 KB Created: 2021-02-07 15:27:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 510e344fd17192a011f18cc5d7a79020 SHA-1: ebaf9cfb62e6c5b75c2ff57065c48c11d27748fc SHA-256: fca3e3800333fde565e344c3f7144589ccba92f26bb8e715b8b3901a7822442f
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 trick the user into visiting a phishing or malware distribution site. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest a common phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://druttle.ru/123?utm_term=wilmington+de+train+station+septa PDF link annotation
    • http://volosaty100.xyz/motorcycle_bike_car_game6f53v.pdfIn PDF document text
    • https://kusuxifitumaka.weebly.com/uploads/1/3/4/5/134593182/zugabes.pdfIn PDF document text
    • http://yandex-dostav.ru/1510976250g4v0n.pdfIn PDF document text
    • http://raicen.com/beldray_airgility_max_manualo92k6.pdfIn PDF document text
    • http://interstart.online/cookie_clicker_ascension_strategyc8ilw.pdfIn PDF document text
    • http://ipoteka.net/nickelodeon_kart_racers_xbox_one_digital_downloadarjjk.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/fedojigudaj/biloduwenumobabetizaxiwa.pdfIn PDF document text
    • https://s3.amazonaws.com/mizeteb/75132411212.pdfIn PDF document text
    • http://setavafajo.epizy.com/xolozaxonenilima.pdfIn PDF document text
    • https://s3.amazonaws.com/nilititonawafim/attestation_de_travail_gratuit.pdfIn PDF document text
    • https://s3.amazonaws.com/ritoma/b_j_p_ka_full_form.pdfIn PDF document text
    • https://s3.amazonaws.com/jozetej/escape_room_answer_level_224.pdfIn PDF document text
    • https://s3.amazonaws.com/diwitapezu/suxefixovijotugu.pdfIn PDF document text
    • https://s3.amazonaws.com/fixararololu/41021737796.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_off0000d711.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD711 5080 bytes
SHA-256: 9d121d8996e9f9d637fda94efb71f5822e86c4854738aca150a36939a8655e80
font_01_sfnt_off0000e840.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE840 10712 bytes
SHA-256: 3a15b0c3d3e60af998f5c46bda3d4237caded32415702c5a49ca42e708f7cc41
font_02_sfnt_off00010cef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CEF 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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