Malicious PDF — malware analysis report

Static analysis result for SHA-256 41b2ce5b4acf70a8…

MALICIOUS

PDF

63.8 KB Created: 2020-12-02 20:40:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: fadac675391dee0b1a7481b910695d05 SHA-1: 64f6edfaf5a1d75029cfd044f3f527cab0eaabcb SHA-256: 41b2ce5b4acf70a824265d6b0191e5d8db586aa550b2677cb31f03192598bf1b
176 Risk Score

Malware Insights

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

The PDF file contains a lure related to 'Nba youngboy concert tickets 2020' and includes an external URI pointing to 'traffset.ru'. The presence of numerous external links, including a link farm heuristic, suggests a malicious intent to redirect users to potentially harmful sites. The ML classifier and ClamAV detection strongly indicate maliciousness, likely related to phishing or a scam.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://traffset.ru/strik?utm_term=nba+youngboy+concert+tickets+2020 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4372360/normal_5f8946dd7e162.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379487/normal_5fbd620e20bf9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402504/normal_5fc51bd1232c3.pdfIn PDF document text
    • https://nugaginidej.weebly.com/uploads/1/3/4/4/134475369/15bf2830666f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368495/normal_5f8ba5a60af37.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388612/normal_5f958eda95cff.pdfIn PDF document text
    • https://dejuxowiku.weebly.com/uploads/1/3/0/7/130738850/8623408.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485942/normal_5fc1790e5ff31.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/xuzed/power_producing_and_power_absorbing_machines.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2c36c88c99b6d37b352da/t/5fc7d9353577ec55121b171f/1606932790579/52945451189.pdfIn PDF document text
    • https://s3.amazonaws.com/setikizo/rerowavozejazago.pdfIn PDF document text
    • https://s3.amazonaws.com/rozebofukixus/kitenofasemu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ac7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC7E 5364 bytes
SHA-256: 7c03a50a6b5cc0bc3bcc1dd2e15015cc5fad0d65df38bc6de1ec624691d65b21
font_01_sfnt_off0000beda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBEDA 11344 bytes
SHA-256: b65aca25c436cc24b0f82c0e9a9e790f5a1f7a442467caf6964fb8d525eefd4b
font_02_sfnt_off0000e47e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE47E 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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