Malicious PDF — malware analysis report

Static analysis result for SHA-256 bde9c0b7a3e7e2d1…

MALICIOUS

PDF

50.6 KB Created: 2020-08-19 15:45:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3925e840cf37e0cf9774b03bac64d66a SHA-1: 13645f363595e33507372c3c442779db97fce4e8 SHA-256: bde9c0b7a3e7e2d11a94266b748321b1161a5f22f49bc3bfd5fda43849f10a9b
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.ru'. This URL is likely used to funnel users to a phishing page or download further malware. The document also exhibits characteristics of a link farm, with numerous embedded links, including one to a Shopify domain that also hosts a PDF. The presence of a 'download button' lure further supports a malicious intent.

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=choco+cooky+font+android
    • http://files.holboxla.com/uploads/1/3/0/9/130969980/fadiparewujinogew.pdf
    • http://fozimuj.ethansshop.com/uploads/1/3/1/4/131437812/d4ea103ab5a0.pdf
    • https://cdn.shopify.com/s/files/1/0431/5725/8395/files/9938496672.pdf
    • https://cdn.shopify.com/s/files/1/0430/9617/8845/files/bluejacking_ppt_and.pdf
    • https://cdn.shopify.com/s/files/1/0440/0503/2086/files/assignment_on_bed_making.pdf
    • https://cdn.shopify.com/s/files/1/0434/3549/1490/files/syracuse_weather_10_day_forecast.pdf
    • https://cdn.shopify.com/s/files/1/0434/2897/0647/files/sozizarefixufuzodugax.pdf
    • https://cdn.shopify.com/s/files/1/0429/6392/7206/files/driver_easy_pro_key.pdf
    • https://cdn.shopify.com/s/files/1/0452/6243/8560/files/marley_cooling_tower_parts_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/4190/7100/files/difference_between_counseling_and_therapy.pdf
    • https://cdn.shopify.com/s/files/1/0434/6304/9378/files/maverick_88_walmart.pdf
    • https://cdn.shopify.com/s/files/1/0435/5194/8963/files/metodo_del_ritmo_ventajas_y_desventajas.pdf
    • https://cdn.shopify.com/s/files/1/0430/9087/0423/files/23654426950.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_off00005364.bin
49fce638b876a96c9d6ec10ba9461ceab69d240351fec81d2227f050ce88e20d
pdf-font-stream PDF embedded font (sfnt) at offset 0x5364 4968 bytes
font_01_sfnt_off00006436.bin
17635d891faa451e82a63ade3961da6ccd7ef5a1d053f201ccb2d35f0dc1c19b
pdf-font-stream PDF embedded font (sfnt) at offset 0x6436 11352 bytes
font_02_sfnt_off000083c3.bin
65d0f1160c8df6588fe04c9d69ae2daea2026a6e01268aacd175be203d2f9998
pdf-font-stream PDF embedded font (sfnt) at offset 0x83C3 10376 bytes
font_03_sfnt_off0000a741.bin
365d7a6920469a729db1c39cafc4daa02317b087ed51ea097bfb84ebcdb833fe
pdf-font-stream PDF embedded font (sfnt) at offset 0xA741 16284 bytes