Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc6496489f105c3a…

MALICIOUS

PDF

48.6 KB Created: 2020-08-11 12:52:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 93f1921b063060136e383e3b27ca0738 SHA-1: 298464c00677aea00604bf57c534555dd08c672e SHA-256: cc6496489f105c3a1039431ae5d65165945a7dba9ebf90ed175beee26fe098b8
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.ru/pify?keyword=cantilever+slab+design+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links. The document body, though heavily obfuscated, contains the same malicious URL and several benign Shopify URLs, suggesting a lure to a malicious site under the guise of providing a PDF document.

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=cantilever+slab+design+pdf
    • http://files.usafagroups.org/uploads/1/3/1/3/131379591/pokabaruxolene.pdf
    • http://files.aplusservicesnz.com/uploads/1/3/1/3/131379894/betab_joseribijora.pdf
    • http://files.onyxfuneralplanning.com/uploads/1/3/1/3/131380413/pofadajigivep.pdf
    • https://cdn.shopify.com/s/files/1/0436/9163/8934/files/23090857956.pdf
    • https://cdn.shopify.com/s/files/1/0436/8410/2297/files/tratamiento_de_sinusitis_aguda_en_nios.pdf
    • https://cdn.shopify.com/s/files/1/0440/9131/0232/files/agatha_christie_gratuit_francais.pdf
    • https://cdn.shopify.com/s/files/1/0430/0298/6659/files/69729639437.pdf
    • https://cdn.shopify.com/s/files/1/0429/3538/6275/files/libetami.pdf
    • https://cdn.shopify.com/s/files/1/0439/2858/4347/files/human_psychology_101_alan_g_fields.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/81159011373.pdf
    • https://cdn.shopify.com/s/files/1/0437/2247/3624/files/sevomo.pdf
    • https://cdn.shopify.com/s/files/1/0431/8524/2269/files/abstract_painting_concepts_and_techniques.pdf
    • https://cdn.shopify.com/s/files/1/0431/5525/9560/files/39565039085.pdf
    • https://cdn.shopify.com/s/files/1/0435/9464/5672/files/civic_education_curriculum_in_nigeria.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000650d.bin
b1dcb69f413d47bfe53329dcaa8e6872ede129f32bc12e2e07f662fd6647396f
pdf-font-stream PDF embedded font (sfnt) at offset 0x650D 5108 bytes
font_01_sfnt_off00007676.bin
38a087575eb17fdb518a100389a95678dd9ada13e5787dbf6df523a539127ea4
pdf-font-stream PDF embedded font (sfnt) at offset 0x7676 15212 bytes
font_02_sfnt_off0000a7d3.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0xA7D3 4324 bytes