Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1ca52b503419b04…

MALICIOUS

PDF

39.3 KB Created: 2020-08-17 02:44:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 49d1d476ea93434174fb67f1edd32120 SHA-1: da1d6993a3d8caf1b1c2bf106d854415aba111d6 SHA-256: f1ca52b503419b046582a91d87915f765c1837d7d159745ca2cd78575a671127
120 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is designed to lure users to malicious content. The document body, though heavily obfuscated, contains references to the redirector URL and other URLs hosted on cdn.shopify.com, likely as part of a link farm to improve search engine ranking for the malicious content. The heuristic firings confirm the presence of a malicious redirector link and a PDF link farm.

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=free++hand+reading+palmistry
    • http://files.chiclibellule.com/uploads/1/3/0/7/130738779/e903636.pdf
    • http://files.sweetbabiesdayhome.com/uploads/1/3/2/7/132740320/zipud_wenuv_soraminudej.pdf
    • http://files.kpoptips.com/uploads/1/3/1/4/131454816/foxerizu_rabogovu.pdf
    • https://cdn.shopify.com/s/files/1/0435/1311/8872/files/r_density_plot.pdf
    • https://cdn.shopify.com/s/files/1/0435/7554/1919/files/rain_man_soundtrack.pdf
    • https://cdn.shopify.com/s/files/1/0437/1300/3674/files/sitosuginodatabupal.pdf
    • https://cdn.shopify.com/s/files/1/0431/1190/7488/files/sister_location_map.pdf
    • https://cdn.shopify.com/s/files/1/0430/7301/1865/files/astronomy_101.pdf
    • https://cdn.shopify.com/s/files/1/0429/2929/1427/files/anthocyanin_structure.pdf
    • https://cdn.shopify.com/s/files/1/0438/2107/2546/files/baseball_scorecard_with_pitch_count.pdf
    • https://cdn.shopify.com/s/files/1/0439/8268/4318/files/75764076887.pdf
    • https://cdn.shopify.com/s/files/1/0429/4718/2759/files/12206532261.pdf
    • https://cdn.shopify.com/s/files/1/0429/9508/9559/files/delta_force_workout.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_off00005cf7.bin
1bd7e29d7bdcf95bfffd65bcfe65c2f73bcd9f3a4b50c1121f94a4dea875e383		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CF7 5432 bytes
font_01_sfnt_off00006f49.bin
8f3a0f0402bfa46d1da78f0dfee0222fe0f0a2d296ee78c5e863daa71fd4ef4d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F49 9816 bytes

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