Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3a07e05a5daa0fc…

MALICIOUS

PDF

51.7 KB Created: 2020-08-13 22:49:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9d0ef5850797c56f32eed6b7a99b9a15 SHA-1: a84ecee2706efb8a8e1c1196423636ad1edf5e0d SHA-256: b3a07e05a5daa0fc9a92e820488c5e05fa55fcc2345077a0629e4552ed71e7ff
128 Risk Score

Malware Insights

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

The PDF contains a link disguised as a movie download ('Chopsticks movie from hub flix') that redirects to malicious infrastructure at ttraff.ru. The document also functions as a link farm, pointing to numerous other PDFs hosted on Shopify, likely for SEO poisoning or to obscure the malicious redirector. The presence of a visual download button further supports 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=chopsticks+movie+from+hub+flix
    • http://files.newlifetabernacleupc.com/uploads/1/3/1/8/131871963/tedevexapulevisabu.pdf
    • http://gadovuwob.kevinlewisreptiles.com/uploads/1/3/1/4/131453247/nizixuvirerok-susef-zofomed.pdf
    • http://files.thegathering4coacheswives.com/uploads/1/3/1/3/131379709/wozasaj-zibimow-vofijibog-ronimirut.pdf
    • http://dizut.useyourclicker.com/uploads/1/3/1/0/131069992/117650ad9.pdf
    • http://kimekabi.steffyrhssrq.com/uploads/1/3/1/4/131407005/difofidegok-kinunafolam-tedipegelobewob-xoxoximebe.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32177526878.pdf
    • https://cdn.shopify.com/s/files/1/0429/2391/7478/files/sewalux.pdf
    • https://cdn.shopify.com/s/files/1/0429/7244/6873/files/69446244239.pdf
    • https://cdn.shopify.com/s/files/1/0431/5453/8658/files/20063052600.pdf
    • https://cdn.shopify.com/s/files/1/0431/2514/5760/files/11992889037.pdf
    • https://cdn.shopify.com/s/files/1/0434/0570/5374/files/fusetipudebuxaru.pdf
    • https://cdn.shopify.com/s/files/1/0434/1045/6730/files/dancing_frog_gif.pdf
    • https://cdn.shopify.com/s/files/1/0435/2222/8379/files/25932452785.pdf
    • https://cdn.shopify.com/s/files/1/0428/1643/8438/files/64537020145.pdf
    • https://cdn.shopify.com/s/files/1/0433/5311/2735/files/bukuniwore.pdf
    • https://cdn.shopify.com/s/files/1/0429/6785/9359/files/free_autocad_2020_tutorial.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000057bd.bin
41daa61002e5edfb3bedb3b8b20eaf5532ed02b41c1f5ce9762ea435f3aa682a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57BD 5280 bytes
font_01_sfnt_off00006999.bin
cb30ccbe3470e24abea742643761fe43cfe74664858df86eeeab0c9a4c342ab2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6999 20968 bytes
font_02_sfnt_off000089c8.bin
bad47d694a1dd9c664d92593e9aa530dcfdac95caf8f68d8ad6f6049d2ff5117		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89C8 2276 bytes
font_03_sfnt_off00009394.bin
af48359c61bd0ad793dafb445ee63daa1e3692f5fa8f9a0b12855e516c32eccd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9394 10948 bytes
font_04_sfnt_off0000b7eb.bin
e56f5db8faf554166087922806b3819c377976d94af14c6b8a512386de68c265		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB7EB 2056 bytes

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