Malicious PDF — malware analysis report

Static analysis result for SHA-256 50db2a1f2c7b7bad…

MALICIOUS

PDF

45.1 KB Created: 2020-08-19 17:44:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3bd09fbc7b59ee7ee6b4ec9c228ddda2 SHA-1: 4d5d3ad2f44902672350e60092893ffea60169e3 SHA-256: 50db2a1f2c7b7bad4891140f8623647b5ad24e89fada201eb694afdf6eec6f5c
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=execute+stored+procedure+using+spring+jdbctemplate'. It also exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on cdn.shopify.com. The document body contains garbled text but includes the same malicious redirector URL and several Shopify URLs, suggesting a lure to external content. No scripts were extracted from this sample.

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=execute+stored+procedure+using+spring+jdbctemplate
    • http://files.nashmortgage.com/uploads/1/3/1/1/131164572/9362213.pdf
    • http://dedilejo.stpaullevittown.org/uploads/1/3/2/3/132303354/juxekajebase_xejek_fimogijezum.pdf
    • https://cdn.shopify.com/s/files/1/0429/8987/9445/files/xenoworivevonawape.pdf
    • https://cdn.shopify.com/s/files/1/0436/9540/7269/files/boyka_o_imbat_c3_advel_cover.pdf
    • https://cdn.shopify.com/s/files/1/0428/7863/2095/files/59116624138.pdf
    • https://cdn.shopify.com/s/files/1/0430/0832/7829/files/gavalaril.pdf
    • https://cdn.shopify.com/s/files/1/0432/2174/5825/files/56703808165.pdf
    • https://cdn.shopify.com/s/files/1/0432/4396/2532/files/vorefimikorutujezemu.pdf
    • https://cdn.shopify.com/s/files/1/0434/0000/3747/files/98844772189.pdf
    • https://cdn.shopify.com/s/files/1/0435/5781/4431/files/vertical_farming_techniques.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_off0000595d.bin
2adb0bc7897afe34c2f427536a6acd5e18deeaed6bb1dbee53d0c3cd4355f0d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x595D 5516 bytes
font_01_sfnt_off00006c01.bin
18e0be12ba4f77608c16abf5ce8000b3c8f45c0b27fd9d77b5826760162599cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C01 14356 bytes
font_02_sfnt_off00009969.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9969 4324 bytes

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