Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3b6de3d4fdaca22…

MALICIOUS

PDF

46.4 KB Created: 2020-08-31 12:59:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ea1ae70fe93dbe61e2b09e0d2e1e08f3 SHA-1: ee8a594eb0ad562c0be9a55df160cb42289b5bd5 SHA-256: c3b6de3d4fdaca228def412ca4c3ebfd7e6b37abcf6b825b9cc6f943aaa0a7b7
162 Risk Score

Malware Insights

MITRE ATT&CK
T1059.003 Windows Command Shell T1204.002 Malicious Link

The PDF contains a link to a redirector (ttraff.cc) which is associated with malicious activity. The document body also contains instructions that suggest the user should copy and paste content into a command-line interface, likely to execute a downloaded payload. The presence of a link farm further supports a malicious intent to distribute further malicious content.

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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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/wix?keyword=ibm+ole+db+provider+for+db2+download
    • https://static.usrfiles.com/ugd/48f461_78e9671fe08e4f5f99681d231033c349.pdf
    • https://static.usrfiles.com/ugd/b8c837_928557fc88504efd843ea792ab26c7a0.pdf
    • https://static.usrfiles.com/ugd/8b49c6_66b5a06627de45d8ab96cf50d636c715.pdf
    • https://static.usrfiles.com/ugd/a467d2_e0953cf9ee2b4dc49de045ba10bee737.pdf
    • https://static.usrfiles.com/ugd/20d83a_255d20faff994dbaa59bf2445ce24809.pdf
    • https://static.usrfiles.com/ugd/b8c837_71801df499414384981e9811586925b8.pdf
    • https://static.usrfiles.com/ugd/3cb679_5fbdf42e03cf4004b9b8256b2992aec0.pdf
    • https://static.usrfiles.com/ugd/b8c837_b30317aaa5564d66978070745cb83036.pdf
    • https://static.usrfiles.com/ugd/b8c837_f2a30a9a72904156b09b47f6b151624a.pdf
    • https://static.usrfiles.com/ugd/b8c837_53337afdb6c94c1f90b3092bd5c9f59d.pdf
    • https://static.usrfiles.com/ugd/1e32c2_8e1a12807c2f4ab5bf52f1163a88784e.pdf
    • https://static.usrfiles.com/ugd/39cb9d_8b31eef530ef4c65a017e90e15be1085.pdf
    • https://static.usrfiles.com/ugd/b8c837_e5d6b7df37384fc9a880e88f05fb19f3.pdf
    • https://static.usrfiles.com/ugd/cac9e4_33e245804fda4eb4bc6853bbe8d96d55.pdf
    • https://static.usrfiles.com/ugd/a4d998_102ba4ccb0654fc18a212fab89363642.pdf
    • https://cdn.shopify.com/s/files/1/0435/0767/9397/files/stoelting_s_anesthesia_and_coexisting_disease_7th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0429/6556/5589/files/jejurogoxaxa.pdf
    • https://cdn.shopify.com/s/files/1/0432/8492/2526/files/etek_multimeter_10709_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kufanagapaxo.pdf
    • https://cdn.shopify.com/s/files/1/0430/5072/9634/files/official_email_writing_format_samples.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000696c.bin
76c96bb7e71783ede18b71782635f17c2fcdc25472e1ce7a2f4f86d91b04b2b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x696C 5080 bytes
font_01_sfnt_off00007a96.bin
a2bcbf213aedbbb5989510a742bb57cb2777e863bd6ec27c20e59aadac08050f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A96 10348 bytes
font_02_sfnt_off00009dc9.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9DC9 4324 bytes

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