Malicious PDF — malware analysis report

Static analysis result for SHA-256 801d268700e764b7…

MALICIOUS

PDF

39.5 KB Created: 2020-10-04 17:25:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 2871a2c52ee24cadf40bf251b7f09cfe SHA-1: df5ac72f9c65c1b49155be92f5b3702a5d4fbbb2 SHA-256: 801d268700e764b7aa1e6781d586bdff674f13b3c31a0e72e43b79424e8f10ff
124 Risk Score

Malware Insights

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

The PDF contains embedded URLs that point to known malicious redirector infrastructure, specifically 'ttraff.club'. The document body, though heavily obfuscated, contains references to these URLs, suggesting an attempt to trick the user into visiting them. The ML classifier strongly flagged this PDF as malicious, indicating a high probability of malicious intent.

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.club/pify?keyword=the+way+of+the+shaman+harner+pdf In PDF document text
    • https://site-1039484.mozfiles.com/files/1039484/52486984017.pdfIn PDF document text
    • https://site-1042554.mozfiles.com/files/1042554/128421362.pdfIn PDF document text
    • https://site-1037086.mozfiles.com/files/1037086/sedefanagatakejud.pdfIn PDF document text
    • https://site-1039197.mozfiles.com/files/1039197/xuzekilamiw.pdfIn PDF document text
    • https://site-1037260.mozfiles.com/files/1037260/puritusujoxewidurotivi.pdfIn PDF document text
    • https://site-1041405.mozfiles.com/files/1041405/zozugakabewazowidakixo.pdfIn PDF document text
    • https://site-1038530.mozfiles.com/files/1038530/49813630177.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/04817e25-0ef1-4afc-bcda-73683e5cdbe6/dilaneva.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b2077c8-b0b6-4dfd-847c-ce03746afafb/woruvumud.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d28108d-d006-49ea-9318-171dd148c21a/25221614662.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd7e5a51-d713-40f0-98cf-8a80bd56bbdc/kidaturimemelobavomev.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4149edca-f6b2-438a-87e8-0b776410da86/68279501442.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f1fd2b7-def9-49cb-bc36-be7701c82d0d/38666333451.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/65722c53-58a7-4c25-8276-530a12181cc0/geziz.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_off00005d21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D21 5392 bytes
SHA-256: 2c4c61ab7ba8680ea067879cac6cc14e5a118cefb8f83dde78676c235fe8083d
font_01_sfnt_off00006f67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F67 9984 bytes
SHA-256: 14c302d3b1b49d1118a42fe07b1793ff76f8c6914f15a317ecd81389cae552e7

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