Malicious PDF — malware analysis report

Static analysis result for SHA-256 43f40ff2c8ca1eaf…

MALICIOUS

PDF

66.1 KB Created: 2020-12-22 06:20:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 276a5e2c8e869a20da6791997587c42d SHA-1: d877878b802d560515c9c05f8bf00cc0647472be SHA-256: 43f40ff2c8ca1eaf5e86cec626d9ce203179e01a7631e4d5fde6c42d44dcef7e
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

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/strik?utm_term=bible+coloring+books+for+adults PDF link annotation
    • https://sozatugija.weebly.com/uploads/1/3/4/8/134859818/jetatetitelalak.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452389/normal_5fc7995557039.pdfIn PDF document text
    • https://penulikadima.weebly.com/uploads/1/3/1/4/131482887/6749912.pdfIn PDF document text
    • https://tabogivazosepa.weebly.com/uploads/1/3/1/8/131871767/629060a.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/kavitokolezub/mumewitedakikof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ed193a10-11f4-4cfb-90b1-86a53fafb239/the_paschal_mystery_full_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb933829-a24e-41a7-b987-83c9f6808489/pokemon_diamond_online_battle.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a9a551ed-e1fd-4a90-872a-039ddf05a96f/jotugugojomo.pdfIn PDF document text
    • https://s3.amazonaws.com/xalexojaxipud/komixutibimifogi.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_off0000c3ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3AB 5444 bytes
SHA-256: 4ac0f2da39d809507434262f50ff82e313c265818c0a2ae691d50404b7089cf8
font_01_sfnt_off0000d642.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD642 11164 bytes
SHA-256: 631c16b9d183544f0cb991439e0b28dfadb1b0573dd6a1bd8a0af6f283545d58

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