Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa93cee678f72752…

MALICIOUS

PDF

42.7 KB Created: 2020-08-24 16:24:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ce43f425e7f8234a24df3d35fad44a61 SHA-1: 2b0ae0c95e12d7a8557dcff7a5808095f219df4b SHA-256: fa93cee678f727525af15fd086cf1e673f0b31d865cd9b7f2c8fb8c5c319206c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains numerous links, with one critical heuristic identifying it as a malicious redirector pointing to 'https://ttraff.com/pify?keyword=android+sdk+manager+install'. Another heuristic indicates a 'Browser extension / update installation lure', suggesting social engineering to trick users into clicking malicious links. The document body, though heavily obfuscated, also contains the same redirector URL and other PDF links, reinforcing the lure.

Heuristics 4

  • 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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=android+sdk+manager+install
    • http://zevuga.nomeatmarch.com/uploads/1/3/0/7/130776433/5845651.pdf
    • http://files.gaborbacsi.com/uploads/1/3/0/7/130739601/xofikitow.pdf
    • http://butef.netherhaughfarm.com/uploads/1/3/2/8/132814930/1797680.pdf
    • http://tisozoxu.setthestagecostumesprops.com/uploads/1/3/1/0/131070357/mosudilezo.pdf
    • https://cdn.shopify.com/s/files/1/0431/4071/0562/files/30404464264.pdf
    • https://cdn.shopify.com/s/files/1/0431/1112/1057/files/25098511675.pdf
    • https://cdn.shopify.com/s/files/1/0430/9119/8112/files/chinese_to_english_phrases.pdf
    • https://cdn.shopify.com/s/files/1/0431/3851/5098/files/27554701031.pdf
    • https://cdn.shopify.com/s/files/1/0431/3127/3365/files/97246925398.pdf
    • https://cdn.shopify.com/s/files/1/0437/3620/3415/files/motuzuzesapepinagabemewi.pdf
    • https://cdn.shopify.com/s/files/1/0431/4628/1122/files/64881679922.pdf
    • https://cdn.shopify.com/s/files/1/0428/5667/7543/files/synonyms_and_antonyms_of_words_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0430/0197/0837/files/rearrange_pages_in_document.pdf
    • https://cdn.shopify.com/s/files/1/0438/7795/7800/files/tivaxejavikumino.pdf
    • https://cdn.shopify.com/s/files/1/0428/8145/0147/files/19339807448.pdf
    • https://cdn.shopify.com/s/files/1/0434/5161/3334/files/gidakoxudosurejadez.pdf
    • https://cdn.shopify.com/s/files/1/0428/4016/2467/files/refraction_and_reflection.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_off00006a26.bin
ee3dcd048675b24bc8bb3a3043845c11e66e121500f6ee15c16ecfbf03afb121
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A26 5200 bytes
font_01_sfnt_off00007bba.bin
f9ea0f61e8cdf3715e0917cf59a8da595f3b02600142ea3d024d34d57772d0b1
pdf-font-stream PDF embedded font (sfnt) at offset 0x7BBA 10060 bytes