Malicious PDF — malware analysis report

Static analysis result for SHA-256 586dd68aa2f0465a…

MALICIOUS

PDF

43.7 KB Created: 2020-08-21 10:14:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 760c2056b3101be02d164eaad898a16d SHA-1: 15c18329fbfea90a964f6de7fff06581f75d396b SHA-256: 586dd68aa2f0465adea38e4bba7e8c1b8aecde7cf8d4ee55cfc215ea2a48e426
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=comparative+superlative+worksheet+macmillan'. Additionally, it exhibits characteristics of a link farm, with numerous embedded URLs, many of which are hosted on Shopify. The document body, though heavily obfuscated, contains the same malicious redirector URL and several benign-looking Shopify URLs, suggesting a lure to download a file. The primary malicious URL is the most critical IOC.

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=comparative+superlative+worksheet+macmillan
    • http://wowuta.cloverfieldbehaviour.com/uploads/1/3/1/8/131858540/e3475ed5.pdf
    • http://files.brookeellenlouttit.com/uploads/1/3/1/6/131606121/wuvesagetinot_loxasufo.pdf
    • https://cdn.shopify.com/s/files/1/0441/2506/1272/files/dnd_players_handbook_2.pdf
    • https://cdn.shopify.com/s/files/1/0438/5875/5749/files/building_design_and_drawing_book.pdf
    • https://cdn.shopify.com/s/files/1/0428/1729/0407/files/sifibazinujufodudixoja.pdf
    • https://cdn.shopify.com/s/files/1/0450/3588/0598/files/fajakidolemegizika.pdf
    • https://cdn.shopify.com/s/files/1/0430/3886/7607/files/kitepomaretuzusejageja.pdf
    • https://cdn.shopify.com/s/files/1/0427/7446/2631/files/ranajatilezizoworumorex.pdf
    • https://cdn.shopify.com/s/files/1/0432/7122/5494/files/46447229930.pdf
    • https://cdn.shopify.com/s/files/1/0430/1104/7575/files/lemafes.pdf
    • https://cdn.shopify.com/s/files/1/0430/4646/9793/files/62839497219.pdf
    • https://cdn.shopify.com/s/files/1/0431/1682/2679/files/17613224509.pdf
    • https://cdn.shopify.com/s/files/1/0433/9928/2845/files/70542074529.pdf
    • https://cdn.shopify.com/s/files/1/0435/5152/2977/files/44547660745.pdf
    • https://cdn.shopify.com/s/files/1/0432/7460/0598/files/xolukefesurigeputiforukat.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_off00006c73.bin
466ba867500903d67d9d921ed0cdcbcabe4dfced9559d1cf24e98da3d2047083		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C73 5296 bytes
font_01_sfnt_off00007e60.bin
631044eafc53e749a3974c6a2900876f08c4b34ab91e6671a85f5e1f15cb1b5c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E60 10224 bytes

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