Malicious PDF — malware analysis report

Static analysis result for SHA-256 98558eb3bb766883…

MALICIOUS

PDF

45.9 KB Created: 2020-10-07 12:44:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: a87bfe497e1bd94055cfebef21985d4b SHA-1: 7a1b469de2f0c4bd3efe47b000ceadcc265954ba SHA-256: 98558eb3bb76688347bf8cc510af011372c2f3a2b5ceca0a1665bac4379927f1
154 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which, 'https://ttraff.link/pify?keyword=needle+and+the+damage+done+tablature', is identified as a malicious redirector. The document body, though heavily obfuscated, contains references to this URL and other links, suggesting a link farm or phishing attempt. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ttraff.link/pify?keyword=needle+and+the+damage+done+tablature In PDF document text
    • http://files.itascasports.com/uploads/1/3/1/4/131437484/mojixe.pdfIn PDF document text
    • http://files.utcgammaphibeta.com/uploads/1/3/1/4/131410872/745567.pdfIn PDF document text
    • http://rimef.dogsdowntownva.com/uploads/1/3/0/7/130740496/5846970.pdfIn PDF document text
    • http://files.woodbrookhuntponyclub.com/uploads/1/3/0/7/130776855/8256371.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/f2ffc46c-7b4e-42b0-b9b9-94f37437c4d3/minaxu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e3c26dc-1d02-4e35-ad5f-d94e07738fc3/defipakefenizukexulixeji.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f7ae197-4443-4dce-afb2-4bd960b65e7d/42502610639.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/67da8a38-802b-4603-b7dd-24708af1cf91/94782051024.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/06728bf0-6ff2-40d9-8e49-e2572fb17e97/83260407401.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90634fa4-6f20-4402-b663-77b90bc79312/lemix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0923234-023b-4f93-a32d-9648775f1663/68623872843.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae693598-4f8b-4dfd-95c5-292ae8b248a0/93355987867.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000604b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x604B 5004 bytes
SHA-256: c4cb03491648c953c74c23b82edc9f31fa2ef1754cb6211185dc117511383823
font_01_sfnt_off00007121.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7121 14072 bytes
SHA-256: 7eba78b958121040d1c4206414f74cd119a1afdf4001042adbfcf1d8034c4d3b
font_02_sfnt_off00009ceb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9CEB 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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