Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4117f87fc9b61f4…

MALICIOUS

PDF

40.1 KB Created: 2020-08-22 16:30:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 861f8e49ac4ed80a259ef28e5d96e263 SHA-1: 4bb5c64da485e382506a8fa267a52ee252373e07 SHA-256: f4117f87fc9b61f4500a9c0bd7f825c472bafed963a42a00e1be9c3f9ef1f48c
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK indicating a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=konami+football+games+apk'. Another critical heuristic, PDF_SEO_LINK_FARM, indicates a mass of external PDF links, predominantly hosted on cdn.shopify.com, suggesting a link farm or SEO manipulation tactic. The document body contains garbled text but includes the same malicious URL and mentions 'Konami football games apk', potentially as a lure.

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.ru/pify?keyword=konami+football+games+apk
    • http://lisoraf.greentreelandscape.com/uploads/1/3/2/8/132814007/9732161.pdf
    • https://cdn.shopify.com/s/files/1/0428/1758/5308/files/widegefasudurij.pdf
    • https://cdn.shopify.com/s/files/1/0431/7990/1079/files/human_anatomy_bd_chaurasia.pdf
    • https://cdn.shopify.com/s/files/1/0431/7832/8224/files/62936198889.pdf
    • https://cdn.shopify.com/s/files/1/0432/9799/6960/files/computer_binary_number_system.pdf
    • https://cdn.shopify.com/s/files/1/0429/4397/1484/files/basic_topology_armstrong_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/9358/9142/files/51419382534.pdf
    • https://cdn.shopify.com/s/files/1/0439/1639/4648/files/21004005185.pdf
    • https://cdn.shopify.com/s/files/1/0429/3538/6265/files/gexajap.pdf
    • https://cdn.shopify.com/s/files/1/0437/4354/3450/files/tatalaksana_hepatoma.pdf
    • https://cdn.shopify.com/s/files/1/0438/6239/2992/files/bcmon_latest_apk.pdf
    • https://cdn.shopify.com/s/files/1/0428/4976/3494/files/vidugivimeruxo.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_off00005e4a.bin
a3f635a54fdc3d65f3d3773640489206bc162202005f2fee60023424e245fd04		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E4A 5296 bytes
font_01_sfnt_off00007043.bin
e2277174fc0d8def9d5165fab2bec78c072c999b52b42816be10b599f77478a8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7043 10396 bytes

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