Malicious PDF — malware analysis report

Static analysis result for SHA-256 75b56c8011f3986a…

MALICIOUS

PDF

76.4 KB Created: 2021-03-16 22:33:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 333dd284e586b6d19aeb8e26901873f0 SHA-1: 7677d1d490cb0ee58c86439e4b799ac1a4761282 SHA-256: 75b56c8011f3986aef763cb2d76df1fe1fc01379ca200f95e34af273174be958
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The document contains an embedded URI pointing to 'https://gimoguvi.ru/123?utm_term=progressive+web+app+bootstrap+template', which is likely a phishing lure. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, potentially for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://gimoguvi.ru/123?utm_term=progressive+web+app+bootstrap+template
    • http://mikenitoxa.22web.org/87014465780.pdf
    • http://farilanij.iblogger.org/english_vocabulary_practice.pdf
    • https://cdn-cms.f-static.net/uploads/4402963/normal_6016e2579261c.pdf
    • https://cdn.sqhk.co/bomoxale/iiMh1Ms/55248051573.pdf
    • https://cdn-cms.f-static.net/uploads/4413867/normal_5fd5f0026cfd6.pdf
    • https://static.s123-cdn-static.com/uploads/4449774/normal_5ff4ab9ea375a.pdf
    • https://cdn.sqhk.co/ragejeli/iMLhjie/easy_homemade_chocolate_cake_recipes_from_scratch.pdf
    • https://cdn-cms.f-static.net/uploads/4408335/normal_6020aea1b4a8a.pdf
    • http://wegutamozeji.iblogger.org/coleman_inflatable_hot_tub_pump_parts.pdf
    • https://static.s123-cdn-static.com/uploads/4369653/normal_5ffebc80184e7.pdf
    • https://static.s123-cdn-static.com/uploads/4366367/normal_5ff402696adff.pdf
    • https://cdn.sqhk.co/difanemifal/jhehjij/wowiluzopa.pdf
    • http://tofuvuniz.iblogger.org/6876828416.pdf
    • https://cdn-cms.f-static.net/uploads/4384825/normal_60315084495c6.pdf
    • https://static.s123-cdn-static.com/uploads/4465398/normal_5ff651431c622.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/zufojadibi/43987468613.pdf
    • https://s3.amazonaws.com/kotenu/how_to_do_total_surface_area_of_a_triangular_prism.pdf
    • http://porininiji.epizy.com/gezenisukogene.pdf
    • http://gevewodex.epizy.com/65354744675.pdf
    • http://jexititojule.rf.gd/guitar_chords_and_tabs_app_for_android.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ec4c.bin
01ae683372388552b5c30365f052cee67f7c0e1486832489eb346196bf8bae95
pdf-font-stream PDF embedded font (sfnt) at offset 0xEC4C 5432 bytes
font_01_sfnt_off0000fec4.bin
fda778ff6195b25d34b92325d54adc7b41f9b56dbc71e71bc4d19d01e31f4cfd
pdf-font-stream PDF embedded font (sfnt) at offset 0xFEC4 10792 bytes