Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9f01e7a7a5728fd…

MALICIOUS

PDF

118.9 KB Created: 2020-11-01 08:40:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 290f3810a42a9bb204f5fdc16daa3be6 SHA-1: 182ac38198863b62771b57a3c894560598471f68 SHA-256: e9f01e7a7a5728fd925c37234bf6456ac46e0e5c0ec508b6c12c2f4b589285c6
154 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, including one pointing to a known malicious redirector. The document body, though heavily obfuscated, appears to contain the URL 'https://ttraff.me/123?keyword=female+serial+killer+types', suggesting a lure to a malicious site. The presence of numerous external PDF links further indicates a link farm or redirection strategy.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.me/123?keyword=female+serial+killer+types In PDF document text
    • https://cdn-cms.f-static.net/uploads/4382976/normal_5f9b0ecadc016.pdfIn PDF document text
    • https://zipalusub.weebly.com/uploads/1/3/4/3/134343211/xapixe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370286/normal_5f90a51faeafb.pdfIn PDF document text
    • https://riwisasivituw.weebly.com/uploads/1/3/1/0/131070703/7373486.pdfIn PDF document text
    • https://rogidalot.weebly.com/uploads/1/3/1/6/131636841/2289554.pdfIn PDF document text
    • https://nedudefo.weebly.com/uploads/1/3/4/3/134389218/973998.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/40f26e2d-3cda-44f0-90ef-ae5d131adf07/88498573605.pdfIn PDF document text
    • https://s3.amazonaws.com/pozokimepe/virginia_tech_chemistry_ranking.pdfIn PDF document text
    • https://s3.amazonaws.com/mejados/akar_bilangan_kompleks.pdfIn PDF document text
    • https://s3.amazonaws.com/sinamozagemoger/isabel_allende_libros_paula.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7b72b764-9eb5-4be9-ad0d-f959d688a4e5/sevetematiwuvolivipogu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53eacc67-692d-4f94-9879-26311fef263a/zusetipomos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c46fa902-4436-405f-962d-471071377e5b/cfg_to_pda_online.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/12603962428.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_off0001945b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1945B 5088 bytes
SHA-256: e895f862e404c7603f387fdf94df4f35d18a9da6ed54eb05a0613b4609faf0f9
font_01_sfnt_off0001a598.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A598 12556 bytes
SHA-256: a986ad1f6240f6faa255036f735403c112caec710e821e092fb45ed698fd20f2

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