Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0120938c3073a07…

MALICIOUS

PDF

34.9 KB Created: 2020-08-02 14:11:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 666dd6a3d6268dc51156479d1c5e91e4 SHA-1: 3bf8b712dcc4e25dbb6511262a0d821b23e2dd02 SHA-256: c0120938c3073a07fc9cf7abb8dc1c57d5562b5ad1834677b1ba1442404e308e
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 'https://ttraff.cc/pify?keyword=lee+load+all+2'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on cdn.shopify.com, but one critical redirector. The presence of a 'download button' heuristic further supports a lure-based attack. The document body contains obfuscated text and the malicious redirector URL, indicating the primary goal is to entice the user to click the link and be redirected to a malicious site, likely for further payload delivery.

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.cc/pify?keyword=lee+load+all+2
    • http://files.nellanis.com/uploads/1/3/1/4/131437711/1681249.pdf
    • http://files.mindswan.com/uploads/1/3/0/7/130776182/gunegejezu-mojawiwuref-wakimone.pdf
    • http://bidafiz.ritosrepellant.com/uploads/1/3/1/6/131606094/pedub_tomukum_betuxipubo.pdf
    • https://cdn.shopify.com/s/files/1/0434/0531/2154/files/veziribawufafi.pdf
    • https://cdn.shopify.com/s/files/1/0429/3348/5727/files/xodijajetinixanem.pdf
    • https://cdn.shopify.com/s/files/1/0432/6018/2692/files/rajokuvonuz.pdf
    • https://cdn.shopify.com/s/files/1/0432/2865/9870/files/49492802269.pdf
    • https://cdn.shopify.com/s/files/1/0433/4216/8218/files/dumuzeraseladuxegimawe.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/99289858455.pdf
    • https://cdn.shopify.com/s/files/1/0439/4339/5483/files/kugosigebudimo.pdf
    • https://cdn.shopify.com/s/files/1/0439/3598/9915/files/tadidorexokadagogif.pdf
    • https://cdn.shopify.com/s/files/1/0430/2376/1571/files/36514682957.pdf
    • https://cdn.shopify.com/s/files/1/0431/8032/7070/files/wonopanajaxedanakuteti.pdf
    • https://cdn.shopify.com/s/files/1/0437/5642/1269/files/newcomb_s_wildflower_guide.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/70945418412.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_off00004c7c.bin
ad547958425988fbb9554aa5d6475d74dead0a51b3a478fb87cbf2b25c08c646
pdf-font-stream PDF embedded font (sfnt) at offset 0x4C7C 4620 bytes
font_01_sfnt_off00005c44.bin
48dfd93ed839e2e735d8dada4fb793e91c2bad5535ac72d4c1b8f10978f7da98
pdf-font-stream PDF embedded font (sfnt) at offset 0x5C44 10300 bytes