Malicious PDF — malware analysis report

Static analysis result for SHA-256 aefb26f5f183f0c1…

MALICIOUS

PDF

69.8 KB Created: 2020-12-13 12:43:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 33370d28b2258b76e489bc0476c58022 SHA-1: 08fbcf74c94301f7058228131e1328da18a04d87 SHA-256: aefb26f5f183f0c17325971ee3806443345fac3626229870f0d392d56a4956eb
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 explicitly extracted, the presence of embedded URLs and the redirector link strongly suggest an attempt to lure the user to a malicious site, likely for phishing or to download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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/123?utm_term=what+nationality+is+jim+cantore In PDF document text
    • https://pimetagedipimop.weebly.com/uploads/1/3/1/6/131636886/114da6836.pdfIn PDF document text
    • https://vufevilasok.weebly.com/uploads/1/3/4/3/134314299/werupinisareke.pdfIn PDF document text
    • https://vepemetamat.weebly.com/uploads/1/3/4/3/134354227/dafiluwanezada.pdfIn PDF document text
    • https://jotukodapoze.weebly.com/uploads/1/3/4/6/134632246/f0059.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/rodigapigeta/28813485248.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/14c6b5ba-e123-4f42-b375-3bb90ccb992b/52298183054.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4fbdee5c7695ca9b5b589/t/5fce9d9c1fb94b45003b8586/1607376288751/kuxolunuronifugifu.pdfIn PDF document text
    • https://s3.amazonaws.com/lumixi/xowoxerujolibud.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd4a027d4d3c23d2ef7cce/1606240772209/kennedy_tool_box_lock_replacement.pdfIn PDF document text
    • https://s3.amazonaws.com/luramamelolem/nba_stream_subreddit.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_off0000d3ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3AD 5228 bytes
SHA-256: 57024274c687d0163d522bdc07518430c668adaf6aa638a1ba8bd4b93f6719f5
font_01_sfnt_off0000e55f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE55F 10948 bytes
SHA-256: ee0b0bf53f2d1700a5ffa183ae3d3e55f19a0497bed7e094d4ff5b7c05623f6d