Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fc16ae11d0b46f9…

MALICIOUS

PDF

87.8 KB Created: 2021-03-19 09:07:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c38b69fabaa59538b29a436b52ca08af SHA-1: a8e68adc951efb04e857be3caac1662ad3045b26 SHA-256: 4fc16ae11d0b46f9db072781ae62b2ce3e6f66a54f67e09e17ddbf8c9ce028d2
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI that directs to a URL masquerading as a movie streaming search result. This is a common lure for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent, and the presence of embedded URLs further supports this. No scripts were extracted, but the PDF structure itself is indicative of malicious activity.

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://jumiwimov.ru/wix?keyword=alita+battle+angel+full+movie+watch+online+dailymotion
    • http://dokovuxumev.22web.org/lugabujagiwuzinanozoxog.pdf
    • https://static.s123-cdn-static.com/uploads/4382186/normal_5fce913133d50.pdf
    • http://copyrightproblem.com/2827806911nzliz.pdf
    • http://fawikenaxalu.scienceontheweb.net/bise_sukkur_hsc_part_2_result_2020.pdf
    • https://cdn-cms.f-static.net/uploads/4477910/normal_60270e7ef3918.pdf
    • http://wdd13.ru/31663322445rbal.pdf
    • https://cdn-cms.f-static.net/uploads/4420756/normal_603a864687e8d.pdf
    • https://cdn-cms.f-static.net/uploads/4463830/normal_6028239386c5c.pdf
    • http://beviluxenumiliv.mywebcommunity.org/which_of_the_following_molecules_can_exhibit_hydrogen_bonding_as_a_pure_liquid.pdf
    • http://zegiwire.sportsontheweb.net/action_words_resume.pdf
    • https://cdn-cms.f-static.net/uploads/4387816/normal_602ed84d3adaf.pdf
    • http://lakuberik.mywebcommunity.org/54525316646.pdf
    • http://tadidavazutopa.sportsontheweb.net/59751068520.pdf
    • http://instasale.company/math_worksheets_4th_grade_multiplicationfgbch.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/c75ccab7-9a9d-4330-ab32-29bf6409cca9/71709677128.pdf
    • http://ginowane.onlinewebshop.net/sutoxeworatebevixejexowu.pdf
    • http://tesuzegijibonu.epizy.com/50024817236.pdf
    • https://uploads.strikinglycdn.com/files/e302450a-c9aa-4cfa-93d4-ffcef3e822dc/the_riveras_show_online_free.pdf
    • http://tofisazo.epizy.com/spatial_autoregressive_model.pdf
    • http://denakisewir.epizy.com/vuejs_laravel_admin_template_free.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_off00011a05.bin
1c8edf56ab5c92a3aa4752c6612ea95854f37947d0c2de4591cbd0d50a879e6f
pdf-font-stream PDF embedded font (sfnt) at offset 0x11A05 5544 bytes
font_01_sfnt_off00012ce2.bin
f28cc315c669e2f3bfe7b83db1587054c75411ba623eb911ffc52cf5ceb574b6
pdf-font-stream PDF embedded font (sfnt) at offset 0x12CE2 10728 bytes