Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b97bf923fba6a22…

MALICIOUS

PDF

49.7 KB Created: 2020-09-01 00:26:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b89927f8331762c51c5dfee25efc34ea SHA-1: fc07c391c78b3b1b59759acce7b3cd57c559a37f SHA-256: 8b97bf923fba6a22a448d4ed34d547cb44b9deb02600df20d206d778189ef674
128 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.me/wix?keyword=business+consultation+report+template'. The document body, though heavily obfuscated, also contains this URL, suggesting it's the primary lure. The presence of numerous other links, many hosted on Shopify, indicates a link farm strategy, likely to improve SEO for malicious content or to obscure the final destination. The file is identified as a PDF and was generated by wkhtmltopdf.

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.me/wix?keyword=business+consultation+report+template
    • https://cdn.shopify.com/s/files/1/0433/4891/8440/files/curse_of_strahd_character_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0433/7863/8998/files/games_on_ti_83.pdf
    • https://cdn.shopify.com/s/files/1/0427/6820/3942/files/redeli.pdf
    • https://cdn.shopify.com/s/files/1/0429/5376/9126/files/61147422728.pdf
    • https://cdn.shopify.com/s/files/1/0451/4054/1593/files/antiphonale_cisterciense.pdf
    • https://cdn.shopify.com/s/files/1/0428/5012/3932/files/mcquay_centrifugal_chiller_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/2721/0144/files/shell_alvania_rl3_grease.pdf
    • https://cdn.shopify.com/s/files/1/0432/5913/4112/files/rifegitabe.pdf
    • https://cdn.shopify.com/s/files/1/0431/7901/6360/files/cross_reference_data_in_excel_sheets.pdf
    • https://cdn.shopify.com/s/files/1/0436/7902/3257/files/fipinexaz.pdf
    • https://cdn.shopify.com/s/files/1/0437/5874/7800/files/aarti_sangrah_video_mp4.pdf
    • https://cdn.shopify.com/s/files/1/0437/1732/9064/files/24274194177.pdf
    • https://cdn.shopify.com/s/files/1/0428/5199/1719/files/72723400375.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006d67.bin
e7ba3ffcd931387ad65ce4762bb1492a89b639d83c32afcb46a360f92afd9039
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D67 5012 bytes
font_01_sfnt_off00007e43.bin
2b17894289ef4ac549ca5ccbfe538e6ebde94701791c0542cba9a71f2d67f349
pdf-font-stream PDF embedded font (sfnt) at offset 0x7E43 2268 bytes
font_02_sfnt_off00008856.bin
9a28e7d436de90d36594f3890583e2552fe3f529162762c1027e18071aaa324e
pdf-font-stream PDF embedded font (sfnt) at offset 0x8856 10328 bytes
font_03_sfnt_off0000ab94.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0xAB94 4324 bytes