Malicious PDF — malware analysis report

Static analysis result for SHA-256 90567a1a0f0fe5a6…

MALICIOUS

PDF

237.7 KB Created: 2021-05-14 03:02:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f8a7df503a74bde99b482d24eb70a011 SHA-1: d829b99909256e80fe23c35d02ea59844c32f05c SHA-256: 90567a1a0f0fe5a6220321f1a48f004ef34500ff7fdb9bd8e812a5e6667a71d9
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL, identified by the PDF_URI heuristic, which points to a suspicious domain. ClamAV detection and ML classification strongly indicate maliciousness, likely related to phishing or malware distribution. The presence of multiple embedded URLs suggests an attempt to redirect the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9986

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://vilenefex.ru/strik?utm_term=d%2526d+5e+cleric+spells+per+day
    • https://neposetami.weebly.com/uploads/1/3/4/6/134691268/42e9efffe4baf1c.pdf
    • https://patoduwewoz.weebly.com/uploads/1/3/1/4/131483118/visunewotikude-juliz-fifuzari-bapugulowari.pdf
    • http://boraguw.medianewsonline.com/74575269053.pdf
    • http://gevixadita.22web.org/happy_wheels_ios_levels.pdf
    • https://fajizaxaro.weebly.com/uploads/1/3/1/3/131381717/e8753d.pdf
    • http://fumexijana.getenjoyment.net/injective_surjective_bijective.pdf
    • https://wotapidedodibi.weebly.com/uploads/1/3/4/4/134475573/2dc4db380b.pdf
    • http://bofinaposo.iblogger.org/60504270713.pdf
    • https://xevibobi.weebly.com/uploads/1/3/4/6/134683071/nifagijamu.pdf
    • https://vakilonote.weebly.com/uploads/1/3/1/3/131382032/sodenatefafowefim.pdf
    • http://volulolusawaz.mygamesonline.org/introduction_to_finite_element_analysis_using_solidworks_simulation_2020.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fizumarasigok.epizy.com/togugulanepozozuxosi.pdf
    • http://susesibukof.epizy.com/black_desert_online_xbox_one_class_guide.pdf
    • https://1ee34b3e-bfcb-4e25-b227-79ffd44eef10.filesusr.com/ugd/9d5096_74aae5c553da4102a11fae74e17e935b.pdf?index=true
    • https://50aad03f-9d2a-47e6-be13-abd12f321b17.filesusr.com/ugd/3fd638_ac1c487a78154dbf93895c0ad6221708.pdf?index=true
    • http://mifivanotelo.rf.gd/windows_10_64_bit_iso_bagas.pdf
    • http://lafeseg.rf.gd/project_manager_round_interview_questions_and_answers_for_.net.pdf
    • https://58960a86-a3f4-42d8-866e-ee2cf32068b1.filesusr.com/ugd/1ad962_4fd2e0563fc44901aac83d99226925fd.pdf?index=true
    • http://duguferebijojo.rf.gd/lerepalenexonep.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_off0000f39a.bin
152f83f52a6ce0dff135d6895f45e52f8c281bd53a90ddf6c43bbbe96ebba77c
pdf-font-stream PDF embedded font (sfnt) at offset 0xF39A 216792 bytes
font_01_sfnt_off00036f29.bin
7b9a78bc71d00e4bcff8473d51fc82c270a18144a13d22e5cfd906eda86eaada
pdf-font-stream PDF embedded font (sfnt) at offset 0x36F29 4156 bytes
font_02_sfnt_off00037d57.bin
0b66631b5bed74ad431181b809bb1b23931ddd6efdff9a441febc5c36818c67a
pdf-font-stream PDF embedded font (sfnt) at offset 0x37D57 12808 bytes