Malicious PDF — malware analysis report

Static analysis result for SHA-256 847a3b810fc46fc9…

MALICIOUS

PDF

50.7 KB Created: 2020-08-11 18:24:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 05094a1db2df49cd093322aa54a87ba1 SHA-1: 7651555aafadce7813bc8852df20ff3ec835eaa7 SHA-256: 847a3b810fc46fc90eda647cb2deef81dd09a8a9b6a8716a43ff8399e7ccd7ea
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links, one of which, 'https://ttraff.ru/wb?keyword=translocation%20of%20solutes%20pdf', is identified as a malicious redirector. The document also exhibits characteristics of a link farm, with numerous external PDF links, suggesting an attempt to manipulate search engine results or distribute malicious content. The ML classifier strongly flagged this PDF as malicious.

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.ru/wb?keyword=translocation%20of%20solutes%20pdf
    • http://files.hwupenyuproject.org/uploads/1/3/0/7/130775071/9040348.pdf
    • http://files.entirebeing.com/uploads/1/3/1/3/131398219/6033821.pdf
    • http://files.oakbaychoir.com/uploads/1/3/1/3/131383297/0b5a6f3f031ba.pdf
    • http://files.toymigos.com/uploads/1/3/1/8/131856381/61b8c1a.pdf
    • http://lasasuku.seagemstudios.com/uploads/1/3/0/7/130775162/gixurezizar_femuveso_satesuxabe_zulujoru.pdf
    • http://fontawesome.iohttp://fontawesome.io/license/
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0431/7957/3414/files/orthographe_illustr.pdf
    • https://cdn.shopify.com/s/files/1/0432/8544/6824/files/burger_king_gutscheine_2020_oktober.pdf
    • https://cdn.shopify.com/s/files/1/0435/0722/0635/files/zabagatuka.pdf
    • https://cdn.shopify.com/s/files/1/0431/0089/7440/files/agenda_and_minutes_format.pdf
    • https://cdn.shopify.com/s/files/1/0436/6955/3305/files/azure_flute_pixelmon.pdf
    • https://cdn.shopify.com/s/files/1/0432/8531/5737/files/fedex_freight_airbill.pdf
    • https://cdn.shopify.com/s/files/1/0431/0165/1105/files/72068432346.pdf
    • https://cdn.shopify.com/s/files/1/0429/8850/3203/files/21176433807.pdf
    • https://cdn.shopify.com/s/files/1/0440/4733/5574/files/44581705992.pdf
    • https://cdn.shopify.com/s/files/1/0431/2478/5319/files/lagadekalukafazimelij.pdf
    • https://cdn.shopify.com/s/files/1/0428/9013/3663/files/fubosumaviwawobuwedabolo.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006ed9.bin
490d8e4722c8bc70998c55e098add321fc789420233aec6e676bd50426314fa7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6ED9 1560 bytes
font_01_sfnt_off000076d6.bin
a86685b05cb0ac99ee0d6fe1ca37c991ab196ba77659151e141bdc0eb52f3f45		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76D6 4980 bytes
font_02_sfnt_off000087c8.bin
186d22bc672e7e5e90abf90f6fa421f6daa8ba7038f2060e3b46cc304220e6f9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x87C8 12172 bytes
font_03_sfnt_off0000af9e.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAF9E 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.