Malicious PDF — malware analysis report

Static analysis result for SHA-256 23967acf3cd21626…

MALICIOUS

PDF

86.3 KB Created: 2021-05-17 01:42:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: af738deb4f37b0b7d69ea6b4f0da40ed SHA-1: 55b0901a018a45e2b761c866395fbb4de91c3f59 SHA-256: 23967acf3cd21626a5a6841d58cc94d2260bbacde09a592efba5744eb8a2cc86
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a phishing or trojan payload. The embedded URL, https://ponafet.ru/strik?utm_term=the+gender+secret+series+movie, is likely the primary lure, directing users to a malicious site. While no scripts were directly extracted, the PDF structure and the presence of external URIs suggest an attempt to exploit vulnerabilities or redirect the user to a malicious resource.

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://ponafet.ru/strik?utm_term=the+gender+secret+series+movie
    • https://cdn-cms.f-static.net/uploads/4482218/normal_603335c986975.pdf
    • https://cdn-cms.f-static.net/uploads/4368487/normal_5fd10eaad38cc.pdf
    • https://cdn-cms.f-static.net/uploads/4374360/normal_605673be13da8.pdf
    • https://static.s123-cdn-static.com/uploads/4367635/normal_5fef3af5e2aba.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://mitufesidu.epizy.com/mejezesiwa.pdf
    • https://uploads.strikinglycdn.com/files/76cc48d2-3b44-459e-898e-c0c0254c9b23/how_to_extend_autocad_free_trial.pdf
    • https://uploads.strikinglycdn.com/files/bd185f77-61e8-4975-a2bf-b1f4913df142/how_to_put_password_on_tp_link_wifi_extender.pdf
    • http://besarod.rf.gd/52433983797.pdf
    • https://s3.amazonaws.com/boxujetanonikuv/dial_liquid_soap_msds_sheet.pdf
    • http://volozixoxogibe.rf.gd/63920370002.pdf
    • http://gokozir.rf.gd/46653934249.pdf
    • https://uploads.strikinglycdn.com/files/effeb992-1352-41c7-92a4-9a78e29341cc/what_is_project_scope_creep.pdf
    • http://wekidezeze.epizy.com/pals_cardioversion_guidelines.pdf
    • http://suvapik.epizy.com/20437721691.pdf
    • https://s3.amazonaws.com/nefunupu/10614564814.pdf
    • https://uploads.strikinglycdn.com/files/a7d90374-577b-4cfb-912a-8f6819bb6db2/wuzinabakimetokexexewez.pdf
    • https://uploads.strikinglycdn.com/files/903f6181-df51-4bf1-8f5b-52adee961a60/what_is_an_er_doctors_schedule.pdf
    • https://uploads.strikinglycdn.com/files/b2613778-2e53-417f-856c-fb1d5048f4a1/matojukogudidorujuzafo.pdf
    • https://uploads.strikinglycdn.com/files/1f26f5fa-3399-4dfb-82e6-5af0d7ffc50e/23613616241.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000106d3.bin
7d4e322f19ece6da85253d99f62af0ac7f2da305bc84e1955ebe77f38d3468e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x106D3 4908 bytes
font_01_sfnt_off00011758.bin
ad04f84576e79d828bd1fde2a9c60194ef1865a665a4c0b4a6462cc75b8d4f87		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11758 11536 bytes
font_02_sfnt_off00013df6.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13DF6 4324 bytes

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