Malicious PDF — malware analysis report

Static analysis result for SHA-256 972e89be9d02d2a7…

MALICIOUS

PDF

62.0 KB Created: 2020-11-22 00:17:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 416e7f03c5dd9a524b82e8c7933d7d25 SHA-1: 13e17dfadd85ed8950950a59157c0b57b153f29d SHA-256: 972e89be9d02d2a71111ae0f858c827ddcf153721a2ca8ba2914317fb6dd2605
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URL point towards a phishing lure disguised as helpful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffmen.ru/123?utm_term=how+to+delete+a+google+classroom+as+a+student
    • https://xitukuwelup.weebly.com/uploads/1/3/4/3/134340625/gipij.pdf
    • https://paxowamowutujaf.weebly.com/uploads/1/3/4/3/134322095/8465615.pdf
    • https://nojefawagalubab.weebly.com/uploads/1/3/4/2/134266261/wawoxuvevizop.pdf
    • https://toreliga.weebly.com/uploads/1/3/4/3/134335880/7829842.pdf
    • https://majijajivetik.weebly.com/uploads/1/3/4/2/134265766/jevijefepe.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/zirojopemup/galvanic_corrosion.pdf
    • https://s3.amazonaws.com/ratixifo/ferrets_for_sale_near_me_cheap.pdf
    • https://s3.amazonaws.com/pazovugal/20283550489.pdf
    • https://s3.amazonaws.com/xuzed/50449868867.pdf
    • https://s3.amazonaws.com/tesapibebujep/martin_x_series_custom_dx1.pdf
    • https://uploads.strikinglycdn.com/files/4ef7267d-8d92-456f-9251-c64f47199875/29025373951.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b8ce.bin
1c21d5e9f5cff5f945f451190ba5616e6c2acd70231ebc7e633b9cf2292541cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB8CE 5312 bytes
font_01_sfnt_off0000cad6.bin
a8daf78863dd7cee275e7dec1aa9dd753fcf1a7f64d525fc08bbc682b036af98		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCAD6 9480 bytes

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