Malicious PDF — malware analysis report

Static analysis result for SHA-256 7499cead71f956ce…

MALICIOUS

PDF

73.9 KB Created: 2021-01-02 15:56:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 6f20a258f7d1a50e70ca5e29b73eb203 SHA-1: b3f58a5af7c639bffa3ea2aca73568a0b6cce052 SHA-256: 7499cead71f956ceb52367a869ffe6f9ab520f8424643886c323ac3299b9b7d8
154 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The primary URL identified, https://traffking.ru/wb?keyword=offline%20music%20player%20for%20iphone%208, is flagged as malicious. The ML classifier also strongly indicated maliciousness. While no scripts were extracted, the presence of a malicious redirector URL strongly suggests a phishing or malware delivery attempt.

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://traffking.ru/wb?keyword=offline%20music%20player%20for%20iphone%208 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4371013/normal_5f8845f64bd46.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495244/normal_5fbe20861d40c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423431/normal_5f9a7362d2570.pdfIn PDF document text
    • https://cdn.sqhk.co/kitolitik/c9DP3ge/31792412281.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405208/normal_5fac075dc8f76.pdfIn PDF document text
    • https://cdn.sqhk.co/fopujetoros/1fhpiij/geometry_dash_world_vault_codes_list.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378620/normal_5f98b225eb8d6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jinabom/67427460136.pdfIn PDF document text
    • https://s3.amazonaws.com/dixaleko/favibapozododetikebizi.pdfIn PDF document text
    • https://s3.amazonaws.com/divelatoxa/6404818398.pdfIn PDF document text
    • https://s3.amazonaws.com/bulalowisu/53473116906.pdfIn PDF document text
    • https://s3.amazonaws.com/nitajosasa/vabozafu.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/30036510301.pdfIn PDF document text
    • https://s3.amazonaws.com/nuruvapozixix/11368761015.pdfIn PDF document text
    • https://s3.amazonaws.com/wixamupelinere/lowndes_county_ms_arrest_report.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_off0000e426.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE426 5576 bytes
SHA-256: 11c581f4bb5edde52f8d5ff2c97b8d26038141d2a8c7d12843d63bbb19bbcb9d
font_01_sfnt_off0000f6fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6FA 10456 bytes
SHA-256: 6dae63b330ded24303c75b8cd9fadc42447a54994a1899a3d95198284e0ee151

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