Malicious PDF — malware analysis report

Static analysis result for SHA-256 95a5b7f21c24ff9b…

MALICIOUS

PDF

68.4 KB Created: 2020-12-24 03:03:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 7fe35c1599c0a470681a6fcbfdf6e2d3 SHA-1: 2e22139a866ba3bf521e0670762171990e43b93a SHA-256: 95a5b7f21c24ff9b14d18bd8104ac9421fb91d38c63d1b1ea3e34ec11b0d2e5f
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'traffking.ru'. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the presence of a malicious URL and the ClamAV detection indicate a phishing or malware distribution attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffking.ru/strik?utm_term=rareform+wallet+amazon In PDF document text
    • https://doleroxewaforud.weebly.com/uploads/1/3/4/3/134322791/bujexi-xaraxan-vinodiludu-lujubusufibitir.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379842/normal_5fb3dad53ae31.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385207/normal_5f93cc5a4cdf5.pdfIn PDF document text
    • https://sixopumep.weebly.com/uploads/1/3/4/2/134266524/netejofalowotogeluk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476123/normal_5fe303f838595.pdfIn PDF document text
    • https://sibomimotilelib.weebly.com/uploads/1/3/4/2/134235458/pumux-rimutuxutetut-widobirurefi-raradezoj.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://uploads.strikinglycdn.com/files/d1a0c602-cade-4f2c-b6a0-7fb6e1f9f3d5/trkiye_de_doan_suriyeli_bebek_says.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c53b47bb-e83a-473c-9bb0-faa9cfaa0553/spike_tv_channel_on_xfinity.pdfIn PDF document text
    • https://s3.amazonaws.com/rejiner/maria_sharapova_class_9_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f00c548-f6da-4081-9479-ccf84f5397d5/minnie_mouse_party_supplies_target.pdfIn PDF document text
    • https://s3.amazonaws.com/bidurudilidujug/cytoplasm_function_in_prokaryotic_cell.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_off0000c324.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC324 4624 bytes
SHA-256: df1313df5af63bc6e8a3426d42ca2b2198446c7b6b06cdc4b2b60b85f0bdfc0e
font_01_sfnt_off0000d2d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2D4 10724 bytes
SHA-256: 128d291756a816ca956fd2b047e316b45bf2dae2e59cbc16ee6777a769423de0
font_02_sfnt_off0000f720.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF720 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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