Malicious PDF — malware analysis report

Static analysis result for SHA-256 746c3929ba3eb4ee…

MALICIOUS

PDF

80.2 KB Created: 2020-12-06 00:16:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 425d0d3aeed5185f95c8da80b0d1e60e SHA-1: 908edb5a84f4e0543fcb1d3cda354af30ad441bc SHA-256: 746c3929ba3eb4eeb91bce143adde87bbf34458d72d338560e0fcc987190b70a
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 0.9996

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://trafffe.ru/strik?utm_term=gay+stories+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4373999/normal_5f981c3773be4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385198/normal_5f8cbc2055bcf.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/62ea4a91-f81c-4fd4-9220-0a8172d38143/lafedavamivanuradeluvokan.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5acadaffbf90a660b1fb2/t/5fc9d19eec1d586fb38e02ea/1607061918588/52426936128.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e815e306-aed1-4184-8be5-3d1c9dd043f3/wawinoparibifosonalavefe.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5088aa5bc066edfc02720/t/5fc9a8a3414f5e352375db03/1607051429246/5412364479.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f31e2cf-7bfa-4ae3-883e-5fbb83f6c645/the_ultimate_texas_mpje_review_guide_2016.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e844cd1e280355d45049/t/5fc4a4879b1ed035387074d9/1606722695860/runner_2_trophy_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ed3c011-b629-4416-8dd4-70c073205428/18441203254.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e885c087-b68b-43c3-a2f2-d22db59b5803/35247682049.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85f74c0a-a204-4b5b-8be1-6ff9d04b74b4/majopadodupidakof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ad93acf-646d-4ad7-9bc4-52fe6628d9de/75491227751.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e689.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE689 5136 bytes
SHA-256: 4e4f8dda68eaa8e4d307de48cc62f56ef6c97c471b9d0155c71894951b1d1339
font_01_sfnt_off0000f822.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF822 11568 bytes
SHA-256: 26f15e6de4403d7c1a0d325c17f6dd91f650ce9707d5aa7197bee3b250da0ff9
font_02_sfnt_off00011f0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F0D 16196 bytes
SHA-256: 412dba933629e02986ce31528e004e8be25030083e0304a64e062b12f6debfd0

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