Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f935839a585cd03…

MALICIOUS

PDF

44.8 KB Created: 2020-08-24 02:51:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b414c64d5e1c5b450546fa0f590d468e SHA-1: ca40fd67ce8e96b06d06da62e1d5fca25cd9aa23 SHA-256: 2f935839a585cd03a83637ca7c2967ea96d05f69b1250845e0c7dbe773720367
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of these links, 'https://ttraff.cc/pify?keyword=bye+bye+dubai+odia+film', is identified as a malicious redirector. The document body, though heavily obfuscated, contains this URL and references to PDF files, supporting the link farm attack pattern. No scripts were extracted, limiting further analysis of payload delivery.

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.
  • 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.
  • 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/pify?keyword=bye+bye+dubai+odia+film
    • http://files.joshualinkmusic.com/uploads/1/3/1/3/131381237/dakuvamudodedi.pdf
    • http://vinigara.churchstrettontaxi.com/uploads/1/3/2/8/132814930/1324633.pdf
    • http://wesudobo.philaflag.org/uploads/1/3/1/4/131407164/7c2f6b2.pdf
    • http://wofipele.theexpatspeechie.com/uploads/1/3/1/3/131381241/rofisejeben-gogumefovot-zusuzuwolujenu-foromudovu.pdf
    • https://cdn.shopify.com/s/files/1/0437/4996/5985/files/95686874871.pdf
    • https://cdn.shopify.com/s/files/1/0431/8501/2900/files/candlestick_chart_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0429/2814/4543/files/pumuzafunulifirawugutopas.pdf
    • https://cdn.shopify.com/s/files/1/0431/0004/5469/files/descargar_aplicaciones_para_celular_motorola_android_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0437/9879/0301/files/amartya_sen_development_as_freedom_free.pdf
    • https://cdn.shopify.com/s/files/1/0436/5654/4409/files/monster_spawning_minecraft.pdf
    • https://cdn.shopify.com/s/files/1/0434/0409/9735/files/health_benefits_of_physical_exercise.pdf
    • https://cdn.shopify.com/s/files/1/0432/4006/3143/files/breve_historia_del_neoliberalismo_david_harvey.pdf
    • https://cdn.shopify.com/s/files/1/0430/4971/3817/files/ruladosalivulapebopip.pdf
    • https://cdn.shopify.com/s/files/1/0455/7878/0837/files/tapuveremolodunizexid.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/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000658e.bin
9881a773bf8bf17bd00f8f8672468035d55995373176b5220d200f0cf1848ef9
pdf-font-stream PDF embedded font (sfnt) at offset 0x658E 4768 bytes
font_01_sfnt_off000075cf.bin
348993731ac0d367cd64d6fcd976c333f0276e0b0bc4f5cdf057430d560aafef
pdf-font-stream PDF embedded font (sfnt) at offset 0x75CF 10024 bytes
font_02_sfnt_off0000981f.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230
pdf-font-stream PDF embedded font (sfnt) at offset 0x981F 4324 bytes