Malicious PDF — malware analysis report

Static analysis result for SHA-256 204d91b4470e6227…

MALICIOUS

PDF

52.1 KB Created: 2020-08-23 04:16:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4400f587eb78481303e76e6cff8815f2 SHA-1: 6cbf0bfb80bdba2ff609843653f6276753ef52b8 SHA-256: 204d91b4470e62277c86e48f5238c680f23b4e750cd411d407875d499456986b
120 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, containing numerous external links. One of these links directs to a known malicious redirector, ttraff.ru, which is likely used to obscure the final malicious destination. The document body, though heavily obfuscated, contains references to the redirector URL and other URLs hosted on content delivery networks and various domains, suggesting a broad attempt to distribute malicious content.

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.ru/pify?keyword=handy+seamless+transitions+v4
    • http://xojukav.stephenieyeoh.com/uploads/1/3/0/8/130874474/kebolekixeman.pdf
    • http://files.holmesrenovationsandrepairsllc.com/uploads/1/3/1/4/131407194/mamisavisekutoxo.pdf
    • http://files.jesusourredeemerlc.org/uploads/1/3/1/3/131378952/wugegowisumufiga.pdf
    • http://fopok.unfeatheredink.com/uploads/1/3/1/4/131437914/8d3e7ed2f8.pdf
    • https://cdn.shopify.com/s/files/1/0431/9730/0885/files/grade_12_physical_science_module.pdf
    • https://cdn.shopify.com/s/files/1/0437/3705/5393/files/2d_cartoon_maker_software_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/8828/9694/files/famojexidurosuwagogusajub.pdf
    • https://cdn.shopify.com/s/files/1/0441/0405/6984/files/2017_form_1040_itemized_deduction_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0433/0664/7717/files/30892266790.pdf
    • https://cdn.shopify.com/s/files/1/0431/5942/1092/files/sojebizamo.pdf
    • https://cdn.shopify.com/s/files/1/0428/5323/6902/files/descargar_agenda_escolar_2020.pdf
    • https://cdn.shopify.com/s/files/1/0431/9353/2573/files/93026375052.pdf
    • https://cdn.shopify.com/s/files/1/0428/7909/0854/files/lefuketanomeniwax.pdf
    • https://cdn.shopify.com/s/files/1/0433/7323/2291/files/lagu_yg_terdalam_cover_reggae.pdf
    • https://cdn.shopify.com/s/files/1/0436/1850/0765/files/53014011108.pdf
    • https://cdn.shopify.com/s/files/1/0430/4519/1841/files/fetojajatexerewijowuxolu.pdf
    • https://cdn.shopify.com/s/files/1/0431/8278/4676/files/bajirozene.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/
    • https://cdn.shopify.com/s/files/1/0436/1850/0765/files/5301

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006545.bin
2e4951b938935592762d9d6c2fce538a7751a3c7783fbb260cad748b0888f23b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6545 4968 bytes
font_01_sfnt_off00007619.bin
4a12ca2edcaeffb8be575e3c4d4c8b60947d3577ab0c1c690e3933b149be8684		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7619 13164 bytes
font_02_sfnt_off00009de5.bin
f72c050da1b9d2b252b60d923d48b873e3167586161433f4ccd489531a5eaa86		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9DE5 16448 bytes
font_03_sfnt_off0000b43c.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB43C 4324 bytes

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