Malicious PDF — malware analysis report

Static analysis result for SHA-256 cff157145c60ba14…

MALICIOUS

PDF

53.0 KB Created: 2020-08-20 03:57:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9303336a13b86a90aee057d656096b03 SHA-1: 1b140dc8ddfd3063f829d94d4c41461ea8dcb272 SHA-256: cff157145c60ba1400277d22edffa7586ce4bc7765ab297c21e86b23f0a4c08e
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many pointing to shopify.com domains, which is indicative of a link farm. One of the primary links directs to 'ttraff.com', identified as a malicious redirector. The document body, though heavily obfuscated, contains the target URL and references to 'wkhtmltopdf', suggesting it was generated by a tool for creating PDFs, likely to host the malicious links.

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=xslt+uppercase+template
    • http://files.eastandwestfinearts.com/uploads/1/3/1/3/131384771/4971e075c5518.pdf
    • http://tolok.beatfurrer.com/uploads/1/3/1/3/131379578/7c18c73b923e7.pdf
    • http://pijin.brijcommunity.org/uploads/1/3/2/3/132303354/mixawav_lunikufazujakoz_nobikok_segipegaxesol.pdf
    • http://menuja.underthesunsolar.net/uploads/1/3/0/7/130740066/79ed410da3d3.pdf
    • http://menuja.un
    • https://cdn.shopify.com/s/files/1/0437/4275/7029/files/35531289419.pdf
    • https://cdn.shopify.com/s/files/1/0433/6022/3387/files/lagu_hanya_rindu_lirik_metrolagu.pdf
    • https://cdn.shopify.com/s/files/1/0437/6556/3549/files/57504858202.pdf
    • https://cdn.shopify.com/s/files/1/0430/8425/1285/files/2839340190.pdf
    • https://cdn.shopify.com/s/files/1/0452/7154/8066/files/67137832244.pdf
    • https://cdn.shopify.com/s/files/1/0433/1739/5614/files/surulasibutemuvapezulit.pdf
    • https://cdn.shopify.com/s/files/1/0429/1241/5907/files/99168181324.pdf
    • https://cdn.shopify.com/s/files/1/0437/5586/4215/files/80965322515.pdf
    • https://cdn.shopify.com/s/files/1/0433/0009/4112/files/uc_browser_java_app_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/5771/7143/files/59037414348.pdf
    • https://cdn.shopify.com/s/files/1/0432/0899/9072/files/87963447479.pdf
    • https://cdn.shopify.com/s/files/1/0428/6549/2127/files/69028247176.pdf
    • https://cdn.shopify.com/s/files/1/0431/0191/3244/files/vegogujud.pdf
    • https://cdn.shopify.com/s/files/1/0433/2467/0105/files/lixuwaronunilosalirelo.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_off00006bc0.bin
99f671ddf2bcbbda07b074c390df485076f87164761a5e801ef96682434933a0
pdf-font-stream PDF embedded font (sfnt) at offset 0x6BC0 5056 bytes
font_01_sfnt_off00007cd4.bin
2e8f510b8682bfc87f7bcb91726e8b9856b3c4530b21e4f98ccd9129855622f3
pdf-font-stream PDF embedded font (sfnt) at offset 0x7CD4 16308 bytes
font_02_sfnt_off0000af33.bin
541fa2b6826b0add99b7d5a173ef1e6a5567607b5192f75b810eb17d6a563501
pdf-font-stream PDF embedded font (sfnt) at offset 0xAF33 16204 bytes