Malicious PDF — malware analysis report

Static analysis result for SHA-256 cfedec588b239534…

MALICIOUS

PDF

84.4 KB Created: 2021-02-19 11:37:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: d833beae36935b046b16edd5f7c745c7 SHA-1: 4dd2a9f5b3abd6e447cd562a06d4c5622a12cb32 SHA-256: cfedec588b239534c0620679e08fb7282db40ec930441d014bec14b6f90e96e6
96 Risk Score

Malware Insights

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

The PDF document contains an embedded URL that leads to a suspicious domain, identified by heuristics as an external URI and an embedded URL. The ML classifier and ClamAV detection strongly indicate maliciousness, classifying it as a phishing trojan. The document body, though heavily obfuscated, appears to be a lure related to "our mothers gardens" to encourage clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://jacksth.ru/strik?utm_term=in+search+of+our+mothers+gardens+summary+and+analysis PDF link annotation
    • http://stepka2016.xyz/escape_from_tarkov_armor_chartccqiv.pdfIn PDF document text
    • http://coupons2020.info/tijakexavafusegutaweg1cxes.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391302/normal_6011c69007d59.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368736/normal_5fe713864d9c1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402710/normal_601a2f00eafd7.pdfIn PDF document text
    • http://jofosisajagov.iblogger.org/manuale_alfa_romeo_giulietta_2011.pdfIn PDF document text
    • http://vclean-sale.shop/98818638799zh569.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375509/normal_6014fdbadd515.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://s3.amazonaws.com/tetenifeme/91521319799.pdfIn PDF document text
    • http://jalovunenenema.epizy.com/cousins_movie_video_songs_free.pdfIn PDF document text
    • https://s3.amazonaws.com/fadedosi/55218105468.pdfIn PDF document text
    • https://s3.amazonaws.com/pirosisob/bhaagamathie_songs_in_telugu.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_off000100d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100D2 5356 bytes
SHA-256: 14650080d3529d29f7f81ac9a26928683c30f247272d394390964e5049a6ff5d
font_01_sfnt_off000112d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112D4 10328 bytes
SHA-256: e9c49a2aa2ca52779e3fdffe9af2ee74fdab2f1ce7d281abb5607650e9b6a95c
font_02_sfnt_off00013643.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13643 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3