Malicious PDF — malware analysis report

Static analysis result for SHA-256 3511bd6d42bf9d4f…

MALICIOUS

PDF

42.1 KB Created: 2020-08-20 04:09:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f04af5bb9751445b647ea439259446cf SHA-1: 65d2dfb12ae0654eb7e7fa84230b150220f35bae SHA-256: 3511bd6d42bf9d4fbefae696f95864ce63db1007b146358f9b28994fd90dc6bb
130 Risk Score

Malware Insights

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

The PDF document contains a lure related to a 'Fedex us airbill form' and includes a high number of embedded links, many pointing to Shopify domains. One critical heuristic indicates a malicious redirector link to 'ttraff.ru'. The document body, though partially corrupted, contains the URL 'https://ttraff.ru/pify?keyword=fedex+us+airbill+form+pdf', suggesting the primary intent is to redirect the user to malicious infrastructure. The presence of numerous links and the invoice lure heuristic support a phishing or social engineering attack pattern.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=fedex+us+airbill+form+pdf
    • http://karopo.clutteredgypsie.com/uploads/1/3/1/4/131438216/6380638.pdf
    • https://cdn.shopify.com/s/files/1/0428/8774/1599/files/disarun.pdf
    • https://cdn.shopify.com/s/files/1/0429/3486/1987/files/general_mathematics_textbook_grade_11.pdf
    • https://cdn.shopify.com/s/files/1/0438/3889/8333/files/school_annual_day_anchoring_script.pdf
    • https://cdn.shopify.com/s/files/1/0431/7482/2044/files/tenofukabatemekovowerut.pdf
    • https://cdn.shopify.com/s/files/1/0430/6350/9141/files/fudoposibiluvinew.pdf
    • https://cdn.shopify.com/s/files/1/0436/0280/4898/files/56487025029.pdf
    • https://cdn.shopify.com/s/files/1/0432/3049/4878/files/mebunirizevupune.pdf
    • https://cdn.shopify.com/s/files/1/0431/4424/9499/files/aristotelian_logic_book.pdf
    • https://cdn.shopify.com/s/files/1/0435/3464/7445/files/x_art_login.pdf
    • https://cdn.shopify.com/s/files/1/0433/4016/9374/files/r_concatenate_strings.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_off000064d0.bin
35fa834631cc5eb77fbf1b1e7bb56d155aed03c7e424a26754bd90f4ac4aaadb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64D0 5352 bytes
font_01_sfnt_off000076e5.bin
f393454669054794a4d05bee322aae44ee589944efe3560418ba9fb3e65c2d7c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76E5 11056 bytes

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