Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7d0504539b5852d…

MALICIOUS

PDF

42.3 KB Created: 2020-08-29 18:46:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9f55c4cd1cdf270f697de5d182354800 SHA-1: 7fb858cc8786550e45f7921f8f0056939378f5cd SHA-256: f7d0504539b5852d6e6cefc02d4125d2d93ca3ce0674293e9a67d5d6192a716f
148 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one heuristic specifically flagging it as a malicious redirector pointing to 'https://ttraff.com/wix?keyword=stratford+ct+tax+collector'. Another heuristic identifies it as a link farm, suggesting an attempt to game search engines or distribute malicious content. The document body, though heavily obfuscated, contains text fragments and URLs consistent with invoice or callback lures, aiming to trick users into clicking the malicious links. No scripts were extracted from this sample.

Heuristics 5

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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.com/wix?keyword=stratford+ct+tax+collector
    • https://cdn.shopify.com/s/files/1/0433/7090/5750/files/postgres_create_table.pdf
    • https://cdn.shopify.com/s/files/1/0434/0652/4581/files/fijoxeragafaxiralalude.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wojilezufaguxulidumusad.pdf
    • https://static.usrfiles.com/ugd/b8c837_00fb4376e5414629938bd228697599e9.pdf
    • https://static.usrfiles.com/ugd/b8c837_5ab49c99e68b4383851476d2a50c2069.pdf
    • https://static.usrfiles.com/ugd/b8c837_111f842161c24db69370aa173d83e0fb.pdf
    • https://static.usrfiles.com/ugd/36f25b_94921a61f2f547ed956612be909247c2.pdf
    • https://static.usrfiles.com/ugd/b8c837_235f4b208c544ea4a61d2f19902fb17e.pdf
    • https://static.usrfiles.com/ugd/b8c837_085437aa8ead483f82bd694a5c504171.pdf
    • https://static.usrfiles.com/ugd/b8c837_c9f6869b972445329dbd2fbf0133938f.pdf
    • https://static.usrfiles.com/ugd/b8c837_0314d0e1cfe2499887db052a0064d812.pdf
    • https://static.usrfiles.com/ugd/b6edda_2d9a68048a834b97a64cb774c735378a.pdf
    • https://static.usrfiles.com/ugd/286fb8_f1a535d35064462fb97575a6df71eebe.pdf
    • https://static.usrfiles.com/ugd/b8c837_c5f6dfe210794c2e96f1f9578585724d.pdf
    • https://static.usrfiles.com/ugd/b8c837_94a2ce10e3a84794aba2741327b599b8.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_off0000663a.bin
f896fb05a159c3533db849e2248b5a2f6baf38ebc32ce50877cfb5177a75b18f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x663A 5008 bytes
font_01_sfnt_off00007748.bin
afece8372f9e9a7a0f581c399df70b42808d97fdbfdc848749739b644d606d41		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7748 10908 bytes

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