Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc4bbe17c03f78a3…

MALICIOUS

PDF

42.6 KB Created: 2020-08-14 02:11:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a669f7680a9911a6d61ca6cb1c0ce4ed SHA-1: e8d70433c6d6cc13bd1b5f028fbef41ab84b23c2 SHA-256: bc4bbe17c03f78a36a3ab2caebfc144fd899d0138eab13eb5b3c91e761c369aa
128 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to Shopify domains, but one critical link redirects to `ttraff.com`, identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to Photoshop CS6 and a URL that appears to be a lure. The presence of a download button heuristic further supports the social engineering aspect of this attack. The primary attack pattern involves tricking the user into clicking a malicious link under the guise of a software download.

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.com/pify?keyword=photoshop+cs6+camera+raw+filter
    • http://gotokubu.pinnerplayers.com/uploads/1/3/0/7/130775680/gedileget.pdf
    • http://files.pirateboatsltd.com/uploads/1/3/1/4/131454262/6882109.pdf
    • http://files.gardensofelegance.com/uploads/1/3/0/8/130814717/8179063.pdf
    • http://files.christianhartsough.com/uploads/1/3/0/8/130873903/1240921.pdf
    • http://banizivig.handymantoledoohio.com/uploads/1/3/2/8/132814930/lamasaxibibi.pdf
    • https://cdn.shopify.com/s/files/1/0433/8896/0933/files/volodenejomofagefevar.pdf
    • https://cdn.shopify.com/s/files/1/0428/8577/5519/files/29194302652.pdf
    • https://cdn.shopify.com/s/files/1/0433/3069/9414/files/80240217651.pdf
    • https://cdn.shopify.com/s/files/1/0448/9232/3995/files/42472580486.pdf
    • https://cdn.shopify.com/s/files/1/0432/6968/5414/files/grade_9_applied_science_textbook.pdf
    • https://cdn.shopify.com/s/files/1/0438/1261/8402/files/3273701883.pdf
    • https://cdn.shopify.com/s/files/1/0434/1514/2567/files/public_finance_and_public_policy_fifth_edition.pdf
    • https://cdn.shopify.com/s/files/1/0433/8538/9206/files/30030474517.pdf
    • https://cdn.shopify.com/s/files/1/0432/3049/4878/files/membrane_potential_physiology.pdf
    • https://cdn.shopify.com/s/files/1/0451/1550/6853/files/completed_uk_passport_application_form_example.pdf
    • https://cdn.shopify.com/s/files/1/0430/3287/1074/files/actinomicosis_veterinaria.pdf
    • https://cdn.shopify.com/s/files/1/0452/6505/9997/files/action_research_sample.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_off00006733.bin
82929f4aa420e17ab0413ce3dcce69063be1a1385b7746e2b2c47323102f6c07
pdf-font-stream PDF embedded font (sfnt) at offset 0x6733 5500 bytes
font_01_sfnt_off000079d9.bin
81928ce769b6246a3000f05426eb9029d9aa1b471b6b95694adb020c8977a163
pdf-font-stream PDF embedded font (sfnt) at offset 0x79D9 10424 bytes