Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5a518de7fcda586…

MALICIOUS

PDF

45.0 KB Created: 2020-08-02 20:28:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 67705e37b3474366f42bc64f1625f849 SHA-1: d399ecbb2490b5cf5be6cd34d4b5a244af32d77c SHA-256: c5a518de7fcda586c58287a8cf6f8bf704c9fc39893cf375ef91ee23f0dbd476
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.com/pify?keyword=eastern+state+hospital+jobs'. This URL is presented within the document body, disguised as a job opportunity. The file also exhibits characteristics of a link farm, with numerous embedded links, many hosted on shopify.com, likely to obscure the malicious redirector. The primary intent appears to be social engineering users into visiting the malicious redirector.

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.com/pify?keyword=eastern+state+hospital+jobs
    • http://files.born2go.net/uploads/1/3/0/9/130969776/supep.pdf
    • http://files.diversityunitkncirg644.com/uploads/1/3/0/9/130969448/wuloju-xoxawojidapu.pdf
    • http://files.qreativestudios.com/uploads/1/3/1/6/131607093/88eefb0.pdf
    • http://files.keepanopenmind.net/uploads/1/3/0/8/130814642/354913.pdf
    • https://cdn.shopify.com/s/files/1/0440/7564/7128/files/12472554191.pdf
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/who_wrote_the_ffa_creed.pdf
    • https://cdn.shopify.com/s/files/1/0438/9024/5787/files/62540985902.pdf
    • https://cdn.shopify.com/s/files/1/0431/8062/1984/files/mekutanetokuzuzemur.pdf
    • https://cdn.shopify.com/s/files/1/0430/7664/9124/files/14621156255.pdf
    • https://cdn.shopify.com/s/files/1/0430/0174/1463/files/48547826896.pdf
    • https://cdn.shopify.com/s/files/1/0433/6268/0984/files/87689201100.pdf
    • https://cdn.shopify.com/s/files/1/0433/1785/4373/files/polutamimojamexajosilekaw.pdf
    • https://cdn.shopify.com/s/files/1/0430/9037/8901/files/puwafawunutabosazirigoga.pdf
    • https://cdn.shopify.com/s/files/1/0431/5453/8658/files/14228533649.pdf
    • https://cdn.shopify.com/s/files/1/0431/2530/9604/files/pugefog.pdf
    • https://cdn.shopify.com/s/files/1/0434/1887/8114/files/planar_handbook_3._5.pdf
    • https://cdn.shopify.com/s/files/1/0432/1198/0964/files/jepewodapexi.pdf
    • https://cdn.shopify.com/s/files/1/0432/4032/5282/files/xedixemakaz.pdf
    • https://cdn.shopify.com/s/files/1/0431/2317/9677/files/deninosuwux.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_off000063a6.bin
3f2cddbdd2bb7ae1a6dddc3021f413c1b80f352347449df506c6ef14c374181c
pdf-font-stream PDF embedded font (sfnt) at offset 0x63A6 4868 bytes
font_01_sfnt_off00007413.bin
70c31cdc45acb4a4cba065d1cae380461146a48eb91db98c2ab0e0f0729fb254
pdf-font-stream PDF embedded font (sfnt) at offset 0x7413 10676 bytes
font_02_sfnt_off0000988e.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3
pdf-font-stream PDF embedded font (sfnt) at offset 0x988E 4324 bytes