PDF static analysis report

Static analysis result for SHA-256 e6afcbd8125164f2…

SUSPICIOUS

PDF

76.0 KB Created: 2021-03-03 07:12:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 9f1ccbeea935918bc8743b5be7245e0d SHA-1: e051720a95043165bb8c6b0ee2e9dc6cab692010 SHA-256: e6afcbd8125164f2a1cd63f5c026e703e5278cf638827511ca0b52fefb3e3f0c
36 Risk Score

Malware Insights

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

The ML classifier strongly indicated maliciousness, and a PDF URI heuristic identified an external URL. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, a tool sometimes used to create malicious PDFs. The primary IOC is the embedded URL, which likely leads to a malicious site or payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 3

  • 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://crophysi.ru/strik?utm_term=who+do+you+love+marianas+trench+piano+sheet+music PDF link annotation
    • https://cdn.sqhk.co/luwivimexu/oicVRhb/bingo_luck_free_casino_bingo_games.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370052/normal_603efd5ce95fe.pdfIn PDF document text
    • https://cdn.sqhk.co/ronelejibir/O2Sgc3k/21517949433.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417429/normal_5feea67096f6e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408462/normal_5fd1b032089b6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413458/normal_600f1ab9d2f70.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451755/normal_60396b8a16366.pdfIn PDF document text
    • https://cdn.sqhk.co/kekelivig/c7GgdEM/26985130976.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456369/normal_602c4fefc0a56.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390095/normal_5fffdcad976a1.pdfIn PDF document text
    • https://cdn.sqhk.co/jememobak/6ieMdjb/foodpanda_rider_app_pakistan.pdfIn PDF document text
    • https://cdn.sqhk.co/tinulafi/LfxjfMP/should_you_use_hashtags_on_instagram_reels.pdfIn PDF document text
    • https://cdn.sqhk.co/jalotenabo/hVjiBhg/7983409866.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450256/normal_6018bdf972c03.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e95c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE95C 5488 bytes
SHA-256: 912ba0530416c8870bdb4efde02bf5775179ee7e8c0bf01662b4ef3978a90647
font_01_sfnt_off0000fbf0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBF0 11336 bytes
SHA-256: 777beacd76abee95234577d87cfaddd066f826af6605487170c48c2d7eedb856