Malicious PDF — malware analysis report

Static analysis result for SHA-256 8580a6dc24584e68…

MALICIOUS

PDF

63.3 KB Created: 2020-12-06 08:15:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 92babcbdc09d3ec52662e8ee7a3629bd SHA-1: 175c9a4ee9b9f956bcaa54086575b7275839ad88 SHA-256: 8580a6dc24584e688627a853949017daaad0a138fc3b67f40d61b45e22749655
154 Risk Score

Malware Insights

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

The sample is a PDF file flagged by multiple heuristics, including a critical alert for linking to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL, 'https://ggtraff.ru/strik?utm_term=dunkin+donuts+pumpkin+donut+nutrition', is the primary indicator of a phishing or malware distribution attempt, likely serving as a lure to a malicious site.

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
  • 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://ggtraff.ru/strik?utm_term=dunkin+donuts+pumpkin+donut+nutrition In PDF document text
    • https://cdn-cms.f-static.net/uploads/4495526/normal_5fb98d82c6245.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376625/normal_5f95735c52de3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450003/normal_5fa743a1da310.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392457/normal_5f8eddadaa2c6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc5636c5687f52b6b9f32bc/t/5fc85e102dd5737571b24d00/1606966802343/warlings_armageddon_hile_apk_day.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf5730173fb5383b99559b/1606375219662/boots_of_haste_pathfinder.pdfIn PDF document text
    • https://s3.amazonaws.com/luresimosip/dogfight_2_addicting_games.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc11b742e34347c70454783/t/5fc4f551fa04221c71bb4814/1606743377084/bukkit_vs_spigot.pdfIn PDF document text
    • https://s3.amazonaws.com/wibedubosateg/doing_business_report_2020_jamaica.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0d4a28139af037644e7e6/t/5fc1040ce18c5c478e1fe0b7/1606485004548/sisetosufajipe.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc18b4cdf132613bbc250a7/t/5fc2d8a0e18c5c478e59c21b/1606604961089/warriors_spottedleafs_honest_answer.pdfIn PDF document text
    • https://s3.amazonaws.com/najubu/90826202768.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc66076b8467722f1f92596/t/5fc7630dbfb90028be50ce86/1606902543943/tagusipuvusemedu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1a7b9084698658e639c4c/t/5fc3de926457125654b29fa2/1606672019897/59269799540.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_off0000bd67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD67 4928 bytes
SHA-256: 7dfdf5cd8a1020ef2090674837f28503b5675a294d2a18a746a1fb922da712f1
font_01_sfnt_off0000ce1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE1D 10084 bytes
SHA-256: c00e9730c20d07fa4b6991c63f48abf22e50eded9617f680a02eab46eee12d8c

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