Malicious PDF — malware analysis report

Static analysis result for SHA-256 e32e73327970311d…

MALICIOUS

PDF

40.1 KB Created: 2020-08-30 23:05:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7152ce129b732c35518326116b7fe3ba SHA-1: 2df7831a55be29cd1945b6bc8dcbfbdd23d77bf4 SHA-256: e32e73327970311de51d006224e8d2ceae69c30de935c21ffee56525db394e77
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. It also exhibits a link farm pattern, suggesting SEO poisoning to lure victims. The document body contains the same malicious URL and a call-to-action phrase, reinforcing the lure. The primary attack vector appears to be a phishing attempt disguised as a legitimate PDF 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/wix?keyword=easy+jazz+guitar+chords+pdf
    • https://static.usrfiles.com/ugd/77eba6_11d09499d2504cdea721df1fb41c5c88.pdf
    • https://static.usrfiles.com/ugd/b8c837_ffa8688089a64fd181585a1459adc7e0.pdf
    • https://static.usrfiles.com/ugd/fd3290_75401d692eb44c449d02bbbcf7f78f41.pdf
    • https://static.usrfiles.com/ugd/b8c837_c9e3139bcce8430f922dac828fd2f76d.pdf
    • https://cdn.shopify.com/s/files/1/0437/0877/6599/files/akuntansi_keuangan_menengah.pdf
    • https://cdn.shopify.com/s/files/1/0464/7665/6790/files/ds3_butcher_knife.pdf
    • https://cdn.shopify.com/s/files/1/0430/8202/3061/files/nupujawe.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/42539854631.pdf
    • https://static.usrfiles.com/ugd/a31856_6ad5ef7a7d2046d48d2976b411462e4f.pdf
    • https://static.usrfiles.com/ugd/ecec20_1a8adbfff96e4b7fba2f5b73ad9abe53.pdf
    • https://static.usrfiles.com/ugd/b8c837_bcdeb140de8b4a1b8d6cfe3dab11a079.pdf
    • https://static.usrfiles.com/ugd/83e24f_1382d32ea3cb4262bfab1b0aa2809e03.pdf
    • https://static.usrfiles.com/ugd/c3548c_e761ef4c4fa949ec94e0e0f57cddf463.pdf
    • https://cdn.shopify.com/s/files/1/0428/1358/7623/files/87508551416.pdf
    • https://cdn.shopify.com/s/files/1/0441/2892/7896/files/91772387295.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_off00005df8.bin
e1025d08f973da606599f03f7ece564087982bfe14ccaf6b20b18a0724091833		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DF8 5572 bytes
font_01_sfnt_off000070f9.bin
ffccedd5a60812a5d80704fec1e33a3d690b9d7e0767274704cdab68cd827c17		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70F9 10180 bytes

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