Malicious PDF — malware analysis report

Static analysis result for SHA-256 b219107282ee7c9f…

MALICIOUS

PDF

50.8 KB Created: 2020-08-22 01:52:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c7f3b309c350951c8ca8c9f81475fb68 SHA-1: 1d078d200704b1ed31c2d410d99f6ee433ce317e SHA-256: b219107282ee7c9fc7b3ef3a4ac504498fbd9fa5f7b6d5b289fb6e53ed903522
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.cc'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, many hosted on Shopify. The document body, though heavily obfuscated, contains the same redirector URL and several Shopify-hosted PDF links, suggesting a coordinated effort to distribute malicious content. The presence of a 'download button' heuristic further supports the lure-based attack pattern.

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.cc/pify?keyword=black+opera+mini+apk
    • http://files.arcadesalvacioncarpinteria.com/uploads/1/3/1/3/131380739/e9f59db71.pdf
    • https://cdn.shopify.com/s/files/1/0430/9539/2409/files/sirabuzonusisalafo.pdf
    • https://cdn.shopify.com/s/files/1/0435/3101/0199/files/92002928122.pdf
    • https://cdn.shopify.com/s/files/1/0427/6885/9303/files/tepuniresopizaleno.pdf
    • https://cdn.shopify.com/s/files/1/0440/5025/1941/files/togovugulidimumivezes.pdf
    • https://cdn.shopify.com/s/files/1/0432/3291/9720/files/13559865249.pdf
    • https://cdn.shopify.com/s/files/1/0430/5597/2506/files/all_quiet.pdf
    • https://cdn.shopify.com/s/files/1/0441/3777/5256/files/88396969960.pdf
    • https://cdn.shopify.com/s/files/1/0447/8061/7885/files/19858707288.pdf
    • https://cdn.shopify.com/s/files/1/0439/6512/0670/files/33424304009.pdf
    • https://cdn.shopify.com/s/files/1/0444/1748/2919/files/famous_company_logos_quiz_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0438/2218/6656/files/the_backyard_beekeeper_s_honey_handbook.pdf
    • https://cdn.shopify.com/s/files/1/0428/8829/8662/files/73130310771.pdf
    • https://cdn.shopify.com/s/files/1/0449/7106/5503/files/aoac_official_methods_of_analysis_volume_2_free_download.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
stream_005_off0000913f.bin
9f441a282821963384382a86fd2ecad8e9eefa876605f9e2c4cb22ff2c0d82c7
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x913F 18716 bytes
font_00_sfnt_off00005d1f.bin
6c530db39e05cf566fe9ebc1c2ac37d27645167623a2a01fc6646f202543c3da
pdf-font-stream PDF embedded font (sfnt) at offset 0x5D1F 4724 bytes
font_01_sfnt_off00006cf6.bin
499187537f18173d05f7fbc73c5aba9c09ae19744d2a4a45c819025e0c6ce393
pdf-font-stream PDF embedded font (sfnt) at offset 0x6CF6 10596 bytes
font_03_sfnt_off0000ae51.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0xAE51 4324 bytes