Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ebceab53038f3a3…

MALICIOUS

PDF

44.7 KB Created: 2020-08-01 06:48:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 52472557a9dce50b1c343f3efc9fa138 SHA-1: 605bd629aa55e2637dc660027266b46a2a9b8283 SHA-256: 1ebceab53038f3a393afc2e93d0b308c14d0a6d0b68e0c2347df9e93850771b2
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains, but one critical link redirects to `https://ttraff.ru/pify?keyword=ti+84+plus+silver+edition+manual`. This heuristic firing indicates the document is part of a link farm designed to redirect users to malicious infrastructure. The document body, though partially corrupted, contains the same lure text as the malicious URL, suggesting a social engineering attempt to trick users into clicking the link.

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.ru/pify?keyword=ti+84+plus+silver+edition+manual
    • http://files.openthedoorleadership.com/uploads/1/3/2/6/132683168/fibiturifugiz_jimategasedirej.pdf
    • http://files.mightyzandor.com/uploads/1/3/1/0/131070525/b42a3443f703567.pdf
    • http://files.streamlineacc.com/uploads/1/3/1/4/131437676/3607112.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/7485095273.pdf
    • https://cdn.shopify.com/s/files/1/0428/4101/4438/files/bajapu.pdf
    • https://cdn.shopify.com/s/files/1/0431/4179/1900/files/sajazurepakupexexapisazil.pdf
    • https://cdn.shopify.com/s/files/1/0428/6654/0711/files/donojejibatimusija.pdf
    • https://cdn.shopify.com/s/files/1/0430/0469/0581/files/xeguwek.pdf
    • https://cdn.shopify.com/s/files/1/0431/0515/7282/files/30428859182.pdf
    • https://cdn.shopify.com/s/files/1/0433/2073/7950/files/75452789921.pdf
    • https://cdn.shopify.com/s/files/1/0430/7632/1434/files/xizovo.pdf
    • https://cdn.shopify.com/s/files/1/0436/9481/7435/files/35060312034.pdf
    • https://cdn.shopify.com/s/files/1/0431/0820/4704/files/90306548910.pdf
    • https://cdn.shopify.com/s/files/1/0430/0832/7829/files/78755402629.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mafimovudowejiner.pdf
    • https://cdn.shopify.com/s/files/1/0431/7813/1611/files/93653545964.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_off00006fd2.bin
1fd595cbb676b00800e9a5ffd8c8fed0d3e4534afb951080a19e8d0ff70fd9dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FD2 5396 bytes
font_01_sfnt_off0000821c.bin
6dd0acf72f8c3c293f5892ea2bea0373e40652946cf7bc259e42825633c92187		 pdf-font-stream PDF embedded font (sfnt) at offset 0x821C 10600 bytes

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