Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2e2462b508f86f4…

MALICIOUS

PDF

83.0 KB Created: 2020-12-26 19:27:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 256b1c781049ed1bb1166844894984c6 SHA-1: 96c03f4ef7f83c436a4425abb2fe31a051c299e3 SHA-256: a2e2462b508f86f4cc2eb694407747134b6025c7f273a543fbfc1ee27f428343
154 Risk Score

Malware Insights

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

The PDF contains a link to 'traffine.ru', which is flagged as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'Nba 2k vc codes xbox one', suggesting a lure to entice users to click the malicious link. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://traffine.ru/123?utm_term=nba+2k+vc+codes+xbox+one In PDF document text
    • https://cdn-cms.f-static.net/uploads/4389816/normal_5f9d5d9b05f09.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460055/normal_5fc220c1e8110.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428035/normal_5fbb69b8e6cff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373511/normal_5f89c13295186.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393208/normal_5faba0bf3646e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446382/normal_5fb5a7672d965.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501965/normal_5fe3e6d0d71ab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488560/normal_5fd8424364080.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406454/normal_5fb7427f6b961.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451047/normal_5fde9ed4a298a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425727/normal_5fd62c3529325.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/0cb1fad7-ba6e-4a03-9c21-14b242187cee/photoshop_cs6_chingliu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1af2c790-59ec-4487-82a7-d08acb06183c/china_bombas_fabricantes.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e9b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9B1 5236 bytes
SHA-256: c265f2fd2df377133904bb8c0cf7387e6ef38b6cdc0f5def47224478e121cf84
font_01_sfnt_off0000fb9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB9E 1636 bytes
SHA-256: b30d0ca848213b9ec921612c9cedbe9327dae9aaf874f51285f0c718a76d35f9
font_02_sfnt_off000103d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103D6 11176 bytes
SHA-256: 0119d9dcb1ff71d8c7d6e0e8f155d035de7738bc8a01a6f05c858d1fe0bcbdd7
font_03_sfnt_off0001299c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1299C 16064 bytes
SHA-256: a1d4134fbbda406da346f56ddc1d227e7d80769408e66148f4135eaa65380371

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