Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f31b20803ffa542…

MALICIOUS

PDF

72.3 KB Created: 2021-02-21 11:44:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 49dcdee7582ade623a6f11cfdd1c8f89 SHA-1: 6ba2ae0ed58fa6e732d67bd8de89a4e83c212ee9 SHA-256: 2f31b20803ffa5424cd19eeec08b1ba25a5f2cacc7fa740a762b3398a9268e1a
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating a phishing attempt. The embedded URL is used to redirect the user to a potentially malicious site. The ML classifier and ClamAV detection strongly suggest malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://crophysi.ru/strik?utm_term=how+old+was+leo+dicaprio+in+romeo+and+juliet In PDF document text
    • https://cdn-cms.f-static.net/uploads/4483082/normal_6022febb62a90.pdfIn PDF document text
    • http://xolimaked.iblogger.org/counter_strike_1._6_bots_file.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476429/normal_5fda86ad50f43.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483346/normal_5fe6f7b040c62.pdfIn PDF document text
    • https://cdn.sqhk.co/gejupajo/5jgtjij/20518951193.pdfIn PDF document text
    • https://cdn.sqhk.co/fefamuve/u3PIjih/sovijazobotagidex.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487186/normal_5fec1d3c1c9c1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474222/normal_60317fc481897.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443814/normal_6031c582ce005.pdfIn PDF document text
    • http://talebakela.iblogger.org/khilona_movie_song_3gp.pdfIn PDF document text
    • https://cdn.sqhk.co/sifolilo/gd4qyDc/police_motorbike_traffic_rider_game.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4499984/normal_5fe27bf19b492.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420761/normal_602c6663c5f78.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455672/normal_5fd7017473ed5.pdfIn PDF document text
    • https://cdn.sqhk.co/wunasesev/gLDic6f/zombie_road_racing_mod_apk_home.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rupiroliwon.epizy.com/75355069239.pdfIn PDF document text
    • http://zatafefot.rf.gd/debt_snowball_calculator_template.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000df02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF02 5348 bytes
SHA-256: 9713420c443808a02f0914361b9be7bf85c6488851aee457bfa3d9f589eb4c62
font_01_sfnt_off0000f12f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF12F 10284 bytes
SHA-256: 5f5043d7b6b694c51878622f2bbb39300817cf883bdac7c43fb4a69703732a31

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