Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f79f2b995970b79…

MALICIOUS

PDF

57.9 KB Created: 2020-09-03 01:15:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8671e24ddc7dad50d80fecb38004759a SHA-1: bbe6f632b3a3e65a0cbea888fd77e5dc73fd7755 SHA-256: 8f79f2b995970b793bb6b0500b5aa9534bc942af847b0075e95bdd4ea7182326
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one prominent link disguised as 'business strategy tools pdf'. This link redirects to malicious infrastructure, indicating a phishing or social engineering attempt. The document body, though heavily obfuscated, contains the same lure text and the malicious URL, reinforcing the attack pattern. No scripts were extracted from this sample.

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.link/pify?keyword=business+strategy+tools+pdf
    • https://static.usrfiles.com/ugd/86319b_237ac024b6744d1c84d161c3458dd6f4.pdf
    • https://static.usrfiles.com/ugd/d9d1f5_f1007d544fd34b89aead578a03c76830.pdf
    • https://static.usrfiles.com/ugd/5ecadc_2b660873a78f43f6a1cbdb2b365bca87.pdf
    • https://static.usrfiles.com/ugd/99afdc_fe914950f6bd4d86937442b775ffa3f8.pdf
    • https://static.usrfiles.com/ugd/de65f7_9d07c0d5cb6347d99bbc46cbb319069e.pdf
    • https://static.usrfiles.com/ugd/9b33c5_bca2149fce55448dabbeb1a9682bdab5.pdf
    • https://static.usrfiles.com/ugd/df4650_8ddd1866a29c4d2193dc2798335616a3.pdf
    • https://static.usrfiles.com/ugd/e2c6c1_0eedb8a69345478c835a7bd281195d32.pdf
    • https://static.usrfiles.com/ugd/1fa6dd_0ffa3bd6803247268029fae7dfbb4f50.pdf
    • https://static.usrfiles.com/ugd/b8c837_72114670a1974d5293f12dccec51f90e.pdf
    • https://static.usrfiles.com/ugd/6290de_a705622ff4bd4af8ac35e183640ebd73.pdf
    • https://static.usrfiles.com/ugd/5be868_e4cb31d490b3409e97a77a8533e8c38d.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_off000097a1.bin
bed7a77d65f7bcc8ba0573940fe9a01357dd9466ff9645e4bfd236bb60240b56		 pdf-font-stream PDF embedded font (sfnt) at offset 0x97A1 5244 bytes
font_01_sfnt_off0000a987.bin
45bc5ec0ddd296e9e4ea9fa5822e2811889288f6aac3e3ec5708678f8d06023c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA987 10312 bytes
font_02_sfnt_off0000ccb5.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCCB5 4324 bytes

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