Malicious PDF — malware analysis report

Static analysis result for SHA-256 8af32dc32a2d1ede…

MALICIOUS

PDF

34.2 KB Created: 2020-11-03 21:28:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 02c0065bb257b202d240d76d394da934 SHA-1: 1129db716b57469f6621f9e94e2aac3d7f9187db SHA-256: 8af32dc32a2d1edeecf02ed14ab8292f9fdf1715371d4e10feee033afd64ee5b
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a link to known malicious redirector infrastructure, specifically 'https://ttraff.cc/123?keyword=remote+download+ps4'. This indicates an attempt to lure the user to a malicious site, likely for further exploitation or credential harvesting. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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://ttraff.cc/123?keyword=remote+download+ps4
    • https://rurasudi.weebly.com/uploads/1/3/4/4/134485231/e2dac61e.pdf
    • https://nukewixe.weebly.com/uploads/1/3/4/3/134385223/notokegagaluku.pdf
    • https://jazexupojofon.weebly.com/uploads/1/3/1/4/131409098/leneturovaf.pdf
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/32e063a95e.pdf
    • https://cdn-cms.f-static.net/uploads/4383916/normal_5fa02d4a4d699.pdf
    • https://zizuralozirufu.weebly.com/uploads/1/3/1/4/131483034/wisugikovif.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/remeranexe/tokutojurijabigu.pdf
    • https://uploads.strikinglycdn.com/files/17d65ca5-e095-4c4d-941a-9a9977c4af45/doxefexalumulujajab.pdf
    • https://s3.amazonaws.com/jeworurowam/greater_albany_public_schools.pdf
    • https://s3.amazonaws.com/rujimidujek/pulaski_middle_school_calendar_new_britain_ct.pdf
    • https://s3.amazonaws.com/sazariwapa/26345268982.pdf
    • https://s3.amazonaws.com/somamere/nokojodelejowuv.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_off00004a64.bin
5d57fae664bfc41962fafd326dd104ade64ab6f895749e9e3421ce89b365ca51		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4A64 5196 bytes
font_01_sfnt_off00005c1b.bin
0c8de46a6abd65fbbc73595bb42bf223385307246428b813b771893a4314d812		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C1B 9576 bytes

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