Malicious PDF — malware analysis report

Static analysis result for SHA-256 445fccdde90cbae3…

MALICIOUS

PDF

49.4 KB Created: 2020-07-31 15:28:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 938a70b05d29e30cd921a152e45db702 SHA-1: 8879a525bc8bcb135dbcb14848787728b3bc8126 SHA-256: 445fccdde90cbae35eb6fcd2d814cee71b6cd0c307549cbc3bb09695d93e9ac0
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, which is indicative of a link farm. One critical heuristic identified a link to a known malicious redirector, ttraff.cc. This suggests the document's primary purpose is to lure users to malicious sites, likely for phishing or to download further malware. No scripts were extracted, and the document body was heavily obfuscated.

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.cc/pify?keyword=string+to+byte+array
    • http://files.thewrightograph.com/uploads/1/3/1/8/131856318/ginotorew-dujadutob.pdf
    • http://files.gordoncobbphd.com/uploads/1/3/0/9/130969242/7040740.pdf
    • http://files.kimberlyrogers.net/uploads/1/3/0/9/130969399/6373983.pdf
    • http://files.massagebymariri.com/uploads/1/3/2/6/132681665/wurijimugo_takoxupesixoje.pdf
    • http://files.romainewashington.com/uploads/1/3/1/8/131857193/ropodefi.pdf
    • http://files.massagebymariri.com/u
    • https://cdn.shopify.com/s/files/1/0432/0893/3540/files/45661699432.pdf
    • https://cdn.shopify.com/s/files/1/0436/9462/0837/files/9235601961.pdf
    • https://cdn.shopify.com/s/files/1/0437/7024/9374/files/66795072602.pdf
    • https://cdn.shopify.com/s/files/1/0428/1021/2519/files/59114985826.pdf
    • https://cdn.shopify.com/s/files/1/0432/2151/6448/files/83488404205.pdf
    • https://cdn.shopify.com/s/files/1/0435/2576/7327/files/2761186273.pdf
    • https://cdn.shopify.com/s/files/1/0432/2567/7982/files/bumoletolefinubabutosuxaw.pdf
    • https://cdn.shopify.com/s/files/1/0434/4774/6710/files/21519330701.pdf
    • https://cdn.shopify.com/s/files/1/0431/0587/8170/files/kijejuvawitu.pdf
    • https://cdn.shopify.com/s/files/1/0431/1715/0368/files/mezigixijilubexinitagubo.pdf
    • https://cdn.shopify.com/s/files/1/0432/6876/7912/files/62347723177.pdf
    • https://cdn.shopify.com/s/files/1/0440/8786/9592/files/wemukoxarabizodudumezaba.pdf
    • https://cdn.shopify.com/s/files/1/0433/6946/3959/files/pukasisibamogodonuzoxedes.pdf
    • https://cdn.shopify.com/s/files/1/0431/7141/4173/files/83730283661.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_off00007830.bin
dba494d5c5c266d6fedd77cdd59643fbd04c3468b732ebb2e980157286a18f90
pdf-font-stream PDF embedded font (sfnt) at offset 0x7830 4776 bytes
font_01_sfnt_off00008873.bin
f1a4f58ecb7e09c31ab7788b06181a0382f34cd2ed5361e8fcd6099c201cd86c
pdf-font-stream PDF embedded font (sfnt) at offset 0x8873 2336 bytes
font_02_sfnt_off000092bb.bin
67bcdf635e79c49c4e611ccb95b8716dce46331a98ad34e4f679e6e19423f841
pdf-font-stream PDF embedded font (sfnt) at offset 0x92BB 11188 bytes