Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e640d02d9658487…

MALICIOUS

PDF

57.2 KB Created: 2020-08-07 20:42:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 161e1b3148ff987fea6e2b5b2a4d8ba9 SHA-1: d2dba20c3eaa0f7e58cfe75fda4135a02b0b9405 SHA-256: 7e640d02d96584873dbf9bec5eb7d1048b9d9f18318879e063f678aec6f5ebe4
140 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, specifically disguised with a lure related to a 'cheesecake factory menu 2020 pdf'. The document body, though heavily obfuscated, contains the same URL. Additionally, a large number of embedded PDF links were found, many pointing to Shopify domains, suggesting a link farm or SEO manipulation tactic to obscure the malicious redirector. The presence of a callback lure heuristic further supports a phishing or scam 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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=cheesecake+factory+menu+2020+pdf
    • http://files.ofrenchpolishing.com/uploads/1/3/0/8/130874066/sagefogazuwomovuvolu.pdf
    • http://roduj.renovalentine.com/uploads/1/3/1/3/131398455/tuvesonabelu_zemovigavim.pdf
    • http://files.aoidc.org/uploads/1/3/0/8/130814070/tagozijopitodapeden.pdf
    • https://cdn.shopify.com/s/files/1/0431/1462/7234/files/madovavewozabemaguwo.pdf
    • https://cdn.shopify.com/s/files/1/0434/2336/7335/files/00000_zip_code.pdf
    • https://cdn.shopify.com/s/files/1/0433/1870/6331/files/wawibewifiroxinab.pdf
    • https://cdn.shopify.com/s/files/1/0435/8373/3915/files/61668887288.pdf
    • https://cdn.shopify.com/s/files/1/0439/4903/1592/files/55718946695.pdf
    • https://cdn.shopify.com/s/files/1/0431/8085/1364/files/6038323989.pdf
    • https://cdn.shopify.com/s/files/1/0430/1763/3949/files/vazuf.pdf
    • https://cdn.shopify.com/s/files/1/0429/7234/8579/files/saturated_and_unsaturated_fatty_acids_structure.pdf
    • https://cdn.shopify.com/s/files/1/0438/2962/4992/files/xubufasaxugul.pdf
    • https://cdn.shopify.com/s/files/1/0434/8359/4909/files/lofoperujotodul.pdf
    • https://cdn.shopify.com/s/files/1/0429/9993/9235/files/43535568150.pdf
    • https://cdn.shopify.com/s/files/1/0432/7853/2758/files/tasononatesodigezaxorem.pdf
    • https://cdn.shopify.com/s/files/1/0431/4087/4408/files/wutozepi.pdf
    • https://cdn.shopify.com/s/files/1/0431/3802/3581/files/sukofuparazisikev.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_off00008fa8.bin
2cc5aeeaaad5d38457dc1fd9efc7d8a4de56d36f621ca26183fb7b6f8958dcc2
pdf-font-stream PDF embedded font (sfnt) at offset 0x8FA8 5708 bytes
font_01_sfnt_off0000a2ee.bin
20f9c57c5df0abf51c953c48b89103704cf03fa9473e2d2966d6026326f6c09f
pdf-font-stream PDF embedded font (sfnt) at offset 0xA2EE 17220 bytes