Malicious PDF — malware analysis report

Static analysis result for SHA-256 cef63dfe871afba5…

MALICIOUS

PDF

77.1 KB Created: 2020-12-23 12:28:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 044fdb12ed494e1ef2a1710a6919983c SHA-1: be4fac1b39a71657d1f7bf625878bceb75f2955f SHA-256: cef63dfe871afba5b72fc1f5a332e3e3788b5b4849eb939c1df2e10b1c1b0f48
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://traffking.ru/strik?utm_term=minecraft+kawaii+world+texture+pack+1.+12.+2 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4426277/normal_5fca7d9c5dae3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391649/normal_5fa5dc585ae9e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387427/normal_5f8ffdc58ebe5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427821/normal_5fce49bb61326.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445534/normal_5f9f6af87f2ba.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4428043/normal_5fc4b881e727c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369648/normal_5f8d3e4c9e417.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://uploads.strikinglycdn.com/files/ae937778-6c86-4965-a267-42d8cafa97b8/wadexufilejiku.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5533cd26ff1194f914669/t/5fce018ae43f2b00a8ce13a8/1607336331387/farm_bill_2020_pros_and_cons.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fe00322ff074777c9865bc0/t/5fe00f867185ee572d70e286/1608519558785/40444994537.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe05cf3c6ccf69f3257e97/1606288848191/australian_rugby_drinking_songs.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf549b08845d0924814e54/1606374555708/backpage_mcallen_tx.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b837761-9672-4f04-96b9-166d028c1cf1/30698499736.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc27aecc14dfd36fefb8ed8/t/5fc752e709f4d56e8f832287/1606898408016/starcraft_deck_boats_reviews.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc53974ff13940aa25be6a7/t/5fcb0ff6da45e86cca9d1b53/1607143415123/79694579505.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe3b0d5147b14804fe7f45/1606302478657/bezuzenukokojalikigigulo.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cc8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC8F 5300 bytes
SHA-256: a89531140229a2ee57513906bfa5127a074f3d237504296f42ccafe26452acbc
font_01_sfnt_off0000debf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEBF 10736 bytes
SHA-256: 6fe7f0a08dd093ed24ad7711747d982ece2c306c6b4e37188e67e58ee2e64c83
font_02_sfnt_off000103c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103C0 16064 bytes
SHA-256: 8ce0575abc6f686af3c1393089841c21814f5c4838d5adbe0d649219e58da802
font_03_sfnt_off00011856.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11856 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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