Malicious PDF — malware analysis report

Static analysis result for SHA-256 29d5c8398e75a94c…

MALICIOUS

PDF

48.3 KB Created: 2020-07-28 16:16:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8812f813149332fb60fd6416b0ad4d62 SHA-1: 65e1d20d20e16cca795960e81018ac550ae82647 SHA-256: 29d5c8398e75a94cd5791aee127addf2af0428ff73ce26ac4282fc27e16d92ce
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains numerous embedded links, a technique often used for SEO poisoning or to redirect users to malicious sites. One critical heuristic identified a link to a known malicious redirector at 'ttraff.ru'. The document body, though heavily obfuscated, suggests a lure related to educational worksheets, which is a common social engineering tactic. The presence of multiple Shopify URLs, while some are benign, indicates a pattern of hosting content on legitimate platforms to mask malicious activity.

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=personification+metaphor+and+simile+worksheets
    • http://files.nourishandthriveforlife.com/uploads/1/3/0/7/130775320/fa27e61739a.pdf
    • http://files.gonzalescountyfarmbureau.org/uploads/1/3/1/4/131437438/metizalipibi-magujipo-jifekub.pdf
    • http://files.emmieannealdersontheatre.com/uploads/1/3/0/7/130775306/67545ec.pdf
    • http://files.sweetandlittlefarm.com/uploads/1/3/1/4/131405977/f9d5dbe6.pdf
    • http://files.gonzalescountyfarmbureau.org/uploads/1/3/1/4/131437438/metizalipibi-magujipo-j
    • https://cdn.shopify.com/s/files/1/0433/6985/7176/files/xodorejivujanapovoxogi.pdf
    • https://cdn.shopify.com/s/files/1/0430/8919/9268/files/burenatefofuvunozapowi.pdf
    • https://cdn.shopify.com/s/files/1/0433/9197/5580/files/risekugefikikugusema.pdf
    • https://cdn.shopify.com/s/files/1/0433/9236/8798/files/79552562660.pdf
    • https://cdn.shopify.com/s/files/1/0428/4517/5971/files/zuniropasaxega.pdf
    • https://cdn.shopify.com/s/files/1/0428/1656/9500/files/4770633511.pdf
    • https://cdn.shopify.com/s/files/1/0432/9806/2501/files/67438373648.pdf
    • https://cdn.shopify.com/s/files/1/0432/9019/8180/files/xijezejozozijedolutis.pdf
    • https://cdn.shopify.com/s/files/1/0431/8468/5224/files/pamili.pdf
    • https://cdn.shopify.com/s/files/1/0433/0776/1819/files/vagoxuxewaleputevodifaj.pdf
    • https://cdn.shopify.com/s/files/1/0429/7077/5706/files/norurenogakirunanirivi.pdf
    • https://cdn.shopify.com/s/files/1/0427/7898/4614/files/jobalopemujokofilozoxeras.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007f35.bin
77591c7a59680b1cba2d1a15d365f4435cd88a1720ede49a514235ed90d1f480
pdf-font-stream PDF embedded font (sfnt) at offset 0x7F35 5340 bytes
font_01_sfnt_off00009134.bin
aa0ddaf8bb839441a72fd1d051b1084d65349c65688d7ef55d208ba9ab0b8bda
pdf-font-stream PDF embedded font (sfnt) at offset 0x9134 10008 bytes