Malicious PDF — malware analysis report

Static analysis result for SHA-256 3cf2ee47b805e1cf…

MALICIOUS

PDF

40.7 KB Created: 2020-09-01 01:17:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 90260881da180a81ee517ce01db51e62 SHA-1: 541148dab10c521d16ad23af8e3a3c02443cdf9b SHA-256: 3cf2ee47b805e1cf8f3f404f388d927e94a8fec9212cb73abf3b7cf171243f87
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with the primary link directing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to financial analysis and includes the malicious URL, suggesting a lure to a phishing or malware distribution site. No scripts were extracted, but the PDF structure and embedded links strongly indicate a malicious intent to redirect the user.

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.cc/wix?keyword=cash+flow+financial+analysis+pdf
    • https://cdn.shopify.com/s/files/1/0429/0753/3475/files/free_printable_math_worksheets_2nd_grade_subtraction.pdf
    • https://cdn.shopify.com/s/files/1/0452/7469/3794/files/porumos.pdf
    • https://cdn.shopify.com/s/files/1/0429/3600/8870/files/bitsat_exam_syllabus_2020.pdf
    • https://cdn.shopify.com/s/files/1/0448/4697/3088/files/reduce_file_size_mac_app.pdf
    • https://static.usrfiles.com/ugd/97493d_dc33f63ab33a484997d506ad860bce6a.pdf
    • https://static.usrfiles.com/ugd/b8c837_80314a30d10c4facaac57f5f2912e18e.pdf
    • https://static.usrfiles.com/ugd/b8c837_d307585f8fdc43e7ab79e7c39acc6d58.pdf
    • https://static.usrfiles.com/ugd/10b11f_cb7b9dcdaa854f06adda346bce363124.pdf
    • https://static.usrfiles.com/ugd/5ed537_0edf5d5c632047a7904cbaf6b8989c5f.pdf
    • https://static.usrfiles.com/ugd/e745be_2cda695f39b742ca8d558e5edb5da6d4.pdf
    • https://static.usrfiles.com/ugd/b8c837_8f270386712642d7ab246af03b1606e4.pdf
    • https://static.usrfiles.com/ugd/7f16bd_538071ffc6b44cdfa1d5e7f75cb06b7a.pdf
    • https://static.usrfiles.com/ugd/99afdc_09a0ef40582f460093220ced5805caed.pdf
    • https://static.usrfiles.com/ugd/20d83a_fa40c7aa81374f5fa284e90e3a410850.pdf
    • https://static.usrfiles.com/ugd/735189_b4a7dd0d56ae4a7882ac20e0cf7cde66.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_off0000622f.bin
0cdf69f2c7246ce7af1fbeae73860a27b325cacc0d453d55ef3b4d4f3dea8d2a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x622F 5244 bytes
font_01_sfnt_off0000741c.bin
4110f74f6fc6c9ac8e6ed333da49786ec5ed101a86710adf108e48d976d204e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x741C 9928 bytes

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