Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b5056b3a3731910…

MALICIOUS

PDF

55.9 KB Created: 2020-08-14 15:26:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 41226958bbfba1517d16a0527b85dd38 SHA-1: c38b7ab0c1dd85baef089516bfeecd1cb326779a SHA-256: 7b5056b3a37319100fefcacf60eab93fa79a87bd81d40f037dc2e6e7d31bd28a
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1200 Hardware Add-in T1059.001 Command and Scripting Interpreter: PowerShell

The PDF contains a link farm designed to appear as legitimate sheet music, but the primary URL redirects to a known malicious redirector. This suggests a phishing or social engineering attempt to lead the user to malicious content. No scripts were extracted, limiting the analysis of further payload delivery or execution.

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.com/pify?keyword=a+certain+romance+bass+sheet+music
    • http://files.marksoftime.com/uploads/1/3/0/7/130739169/60d9c3ac326.pdf
    • http://files.drlaurienavinllc.com/uploads/1/3/1/4/131453255/bfb8a4ae.pdf
    • http://files.circleschools.org/uploads/1/3/0/8/130874522/a229d6639.pdf
    • http://files.kulanuicounseling.com/uploads/1/3/0/9/130969003/4699073.pdf
    • https://cdn.shopify.com/s/files/1/0433/8014/6343/files/lilolimowigekaro.pdf
    • https://cdn.shopify.com/s/files/1/0428/2191/0687/files/vejigugifizuturiterox.pdf
    • https://cdn.shopify.com/s/files/1/0428/0451/0887/files/zivalafusew.pdf
    • https://cdn.shopify.com/s/files/1/0430/5630/0186/files/wajepexutadesikakesuwex.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/87277754858.pdf
    • https://cdn.shopify.com/s/files/1/0437/1644/4315/files/1987_corvette_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/4396/2532/files/74755616444.pdf
    • https://cdn.shopify.com/s/files/1/0434/7658/2552/files/47238554722.pdf
    • https://cdn.shopify.com/s/files/1/0433/5104/8357/files/radosol.pdf
    • https://cdn.shopify.com/s/files/1/0430/9316/4199/files/290365087.pdf
    • https://cdn.shopify.com/s/files/1/0432/8564/3419/files/42900775490.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lomapatigusobotatijizu.pdf
    • https://cdn.shopify.com/s/files/1/0437/7162/5621/files/ambaji_aarti_free_download_in_gujarati_free_download.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c49.bin
5318f9aff5b118d4999a559741e01e8dce588f623b2c6de212ea1570b6705480		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C49 5020 bytes
font_01_sfnt_off00007d19.bin
b8d96281ffc1ba83d71d704414fd7f95b39bc20e56eb25b873980b4de5febfcb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D19 15272 bytes
font_02_sfnt_off0000acd2.bin
a95eff378c135b1ab40d10b3cd1da1bafbc07f86005f57898d079c90d712ddbd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xACD2 16204 bytes
font_03_sfnt_off0000c1ff.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC1FF 4324 bytes

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