Malicious PDF — malware analysis report

Static analysis result for SHA-256 564d401f359e9424…

MALICIOUS

PDF

64.3 KB Created: 2020-10-18 09:12:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: efb99adea8a495df98932c63eec3efe0 SHA-1: d6e8205472f348a847ea9d23cc22fd31440796e5 SHA-256: 564d401f359e94247e3ecb2494d9cbc75a0d8e32719762ec56c25a3913605260
154 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which points to a known malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector. The presence of numerous external links and the ML classifier's high confidence score indicate a malicious intent, likely to direct users to a phishing or malware-hosting site.

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://gettraff.ru/wb?keyword=albert%20mosseri%20new%20york%20life In PDF document text
    • https://jiwadurator.weebly.com/uploads/1/3/0/7/130776405/sozog_bovabaji.pdfIn PDF document text
    • https://jivexine.weebly.com/uploads/1/3/1/3/131380908/1176083.pdfIn PDF document text
    • https://fidegobopoj.weebly.com/uploads/1/3/2/8/132815019/lonejix.pdfIn PDF document text
    • https://dofazodasi.weebly.com/uploads/1/3/0/8/130873943/tusuz.pdfIn PDF document text
    • https://kakawugob.weebly.com/uploads/1/3/0/9/130969990/fefuz_bojofatotos.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367646/normal_5f8820e6a8dc9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369909/normal_5f8bac17db7fb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365584/normal_5f86f54034af2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367275/normal_5f8a3d741dda8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370280/normal_5f8823bf2e030.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372985/normal_5f8a0355b1f20.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365552/normal_5f8755aa26162.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/594cb1cf-88cd-4554-94f3-47bb775477f0/gedukatave.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eeec01aa-c741-408b-829c-9cb5ebc010b8/mawafuruwokutomov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dcb886eb-f783-47ce-90d6-7268e1750265/11401731043.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8cb84a14-2c78-4148-896d-0e2cd55377c7/56915209937.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2744d2e-da97-4712-8c41-6f79c763b05a/liguba.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/47016d5a-d71e-4d97-9f9f-3646eaf9ed53/wuboxuka.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5f12cfd9-83cf-4686-9d98-5c549219cf5e/81034002109.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b9c74d3-1774-476e-8a63-f151b875931a/craft_cms_create_templates.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_off0000beeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBEEB 5088 bytes
SHA-256: 7b7c25f5ba46d99c7f091c19bb0e0c228c37a6b281ee5f11405b85baa4967744
font_01_sfnt_off0000d03f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD03F 10392 bytes
SHA-256: 5e6f9afea1e9ce2c6bd9cd1363b599f75ac54172f0e6210973c1bfa02de5f870

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