Malicious PDF — malware analysis report

Static analysis result for SHA-256 6398cf2c8c600561…

MALICIOUS

PDF

70.2 KB Created: 2020-11-22 12:26:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: be843b1e5ffe3112b74edecfa2ba501d SHA-1: db7f0d9adf28c2743cb00b1872652cb77c143922 SHA-256: 6398cf2c8c6005613c1b59c08dcfff5abf2088e2592a4b59d7a05b2ee08296c4
156 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 a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/123?utm_term=vanilla+wow+holy+priest+leveling+guide PDF link annotation
    • https://wekisakalew.weebly.com/uploads/1/3/4/6/134617168/e60249.pdfIn PDF document text
    • https://zoveponezewuda.weebly.com/uploads/1/3/0/7/130738822/jokixigaxajax.pdfIn PDF document text
    • https://zozabamefopofa.weebly.com/uploads/1/3/4/2/134234868/4149879.pdfIn PDF document text
    • https://mufebomilizupa.weebly.com/uploads/1/3/4/6/134608191/25eed23.pdfIn PDF document text
    • https://renokiva.weebly.com/uploads/1/3/4/3/134353994/sureb-mekokuzilozalo-xubaxe.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/fb1f1205-2f5f-43b2-9a9e-746714103b86/88356051439.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f77befd3-8da7-40ee-aa6d-a95060a56001/62699165258.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f04ab50f-1720-4cfb-948a-bbaf703d6505/anonymous_external_attack_indir.pdfIn PDF document text
    • https://s3.amazonaws.com/wewuxuviwar/7724453169.pdfIn PDF document text
    • https://s3.amazonaws.com/bajapovogam/balumemuxozumevuwasosas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/61f42cc4-ee79-4c4b-8ac1-d8290dd5108a/tiger_woods_pga_tour_06.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f3e9144-e063-4605-972d-274b96d0d0e1/xefavelegoneposovowa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7635674-5f92-48f0-812c-1bed770913e0/31264592496.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c153ad8b-3e61-422f-8eea-40019b7333fa/74328894270.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d97fa26-b311-457b-bce2-39237e786c02/ditepuxipesemekapaje.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_off0000d5ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5EE 5440 bytes
SHA-256: 70a771673c4125300f98f82f9ecf693883e288f3116222076e7351ce060b268e
font_01_sfnt_off0000e88b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE88B 10392 bytes
SHA-256: 4f96a3cfbcc228438e7560fd4ee97be5d5a2fceb7fa8589bd84e8aa86ba35a3c

Open this report in the interactive analyzer, or submit your own file for analysis.