Malicious PDF — malware analysis report

Static analysis result for SHA-256 946efad88bf45eb6…

MALICIOUS

PDF

77.7 KB Created: 2021-05-18 13:59:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f3b6bcc107a6d9a0b5f819230db06b8e SHA-1: 52e1ce9c20982698b950382668695215ca0104b1 SHA-256: 946efad88bf45eb6eb6540bdc488f93d682656101b6d5ab29b74eaaa0ca31ed0
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that directs to a suspicious domain, identified by heuristics as potentially malicious and flagged by ML classifiers. The ClamAV detection and ML model output strongly indicate malicious intent, likely for phishing or malware delivery. Although the document body is heavily obfuscated, the presence of the external URI points to an attempt to redirect the user to a harmful resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://xezojetit.ru/strik?utm_term=que+es+la+ingenieria+inversa+en+informatica
    • https://davijune.weebly.com/uploads/1/3/5/3/135315517/wijopedogaxeji_rupudutu_rotesufijasalu.pdf
    • https://cdn-cms.f-static.net/uploads/4417669/normal_5fe748f71f66a.pdf
    • https://static.s123-cdn-static.com/uploads/4413578/normal_5ff0e2b060e7d.pdf
    • https://xavexipaw.weebly.com/uploads/1/3/1/6/131636683/a18a76ea0d6.pdf
    • https://mabelemaje.weebly.com/uploads/1/3/4/7/134705401/gegiro.pdf
    • https://xifofenanupov.weebly.com/uploads/1/3/4/8/134857182/tolalawafomo.pdf
    • https://cdn-cms.f-static.net/uploads/4449768/normal_60265bb3d3a6b.pdf
    • https://rozapalevode.weebly.com/uploads/1/3/4/7/134705228/lutunuxol_manilog_pobojogixi.pdf
    • https://cdn-cms.f-static.net/uploads/4372967/normal_5fd264b811742.pdf
    • https://bibatajikoxego.weebly.com/uploads/1/3/5/3/135315017/figirivo-ligomorer-piwewemidisunim-fifilelixapera.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/bec60ad4-c2dc-43e0-b2ab-99933675d58f/blues_lead_guitar_licks_tabs.pdf
    • https://s3.amazonaws.com/setigafat/what_thickness_rope_for_tree_swing.pdf
    • http://pulovuvaf.epizy.com/tratamiento_de_la_balanitis_en_nios.pdf
    • https://s3.amazonaws.com/vitelitubovuluj/how_to_get_free_money_on_a_prepaid_card.pdf
    • https://uploads.strikinglycdn.com/files/05fce5fb-c67d-43cf-92d2-0982670724ae/make_a_venn_diagram_to_compare_and_contrast_prokaryotic_and_eukaryotic_cells.pdf
    • https://s3.amazonaws.com/vovabagubajegeb/search_a_with_python.pdf
    • https://s3.amazonaws.com/rixevozajixezos/ruwiluwovujikifatotatemat.pdf
    • https://uploads.strikinglycdn.com/files/e4ccc355-99f2-49d1-a4c4-a6370ca46601/rhino_tutorial_italiano.pdf
    • https://uploads.strikinglycdn.com/files/79cf6e8f-bc25-499b-9d40-1d0ac093e147/zakitokevel.pdf
    • http://kasanuvuwa.epizy.com/49150063138.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_off0000ef16.bin
0b441f8509fa6ce4d439b07bc42345a69dca57de9ad9a0675e25749279f375e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEF16 5320 bytes
font_01_sfnt_off0001012a.bin
e81b5e395e9d36b9d9632423774378a1aa0137c426933c3775f953432e356d6d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1012A 11832 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.