Malicious PDF — malware analysis report

Static analysis result for SHA-256 7428b593ef2ffe64…

MALICIOUS

PDF

68.1 KB Created: 2021-01-05 20:36:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 2860736354e41a9647ef8e3ab90de0e5 SHA-1: dfa2ed144320649e88d09e897e3f512e1fb3e783 SHA-256: 7428b593ef2ffe64313bdfcac1091f2045bb734322e34268eb6af1cc3a0018c8
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 high likelihood of malicious intent. The embedded URL points to a domain associated with phishing or malware distribution, suggesting the document is a lure. Although no scripts were directly extracted, the PDF structure and embedded URLs are indicative of a phishing attempt to trick users into downloading further malicious content.

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://traffnew.ru/aws?utm_term=fairy+tail+theme+cello+sheet+music PDF link annotation
    • https://cdn.sqhk.co/fakupavod/RDyuHUs/kixafizimadiwutukefi.pdfIn PDF document text
    • https://febafowizozijuz.weebly.com/uploads/1/3/4/8/134860945/tazegolowid_galexolutupaw.pdfIn PDF document text
    • https://cdn.sqhk.co/pivokazi/1KgghfC/25140425993.pdfIn PDF document text
    • https://vavinaxedekofew.weebly.com/uploads/1/3/0/9/130969509/bopuzamemuge.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/16cb581c-7d18-418b-9db4-bbaa62fafce1/footloose_2011_score.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/788332e3-fc48-4851-acec-4843e240e043/12_channel_blogspot.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/35181270261.pdfIn PDF document text
    • https://s3.amazonaws.com/fadobirak/vunodo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/631ebea3-8f82-4fe4-bda1-e4cfdd43b60e/dufeguburajonujujokeduj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/503956b9-ead9-45ee-bdf7-3f62de83c669/wovutoludevozefigufefuzi.pdfIn PDF document text
    • https://s3.amazonaws.com/setaxilitozuko/catalogo_hinode_abril_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/gezejoputiwinu/riverside_high_school_greer_sc_lacrosse.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e863a7bf-16da-4629-8196-ec4ec298b412/sonosudakenelorejukoroga.pdfIn PDF document text
    • https://s3.amazonaws.com/voxulija/band_maid_daydreaming_choose_me.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_off0000c8cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8CD 5096 bytes
SHA-256: c1973e060134f2f2578afb0fc9eb4b4678f384cfd5573b6cb9ab44383b2ba2c7
font_01_sfnt_off0000d9fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9FB 12080 bytes
SHA-256: 6bcfe939371971bf3adf3797dafb2ecd333a7fd018668fadaa86c18261dc2409

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