Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7bfd60ce6626979…

MALICIOUS

PDF

46.3 KB Created: 2020-08-17 08:56:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7e3f8209371faa2ca1398bad77af7043 SHA-1: e4215bbc56c34dd820db4aa44dc749ea5d26e5f3 SHA-256: c7bfd60ce66269791268b7d8b9c9d52de90f0926ae98dcb62c80b6a4108d7ed8
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=cours+espagnol+pour+debutant+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, including one to 'http://pikoruzaz.carolynmarconi.com/uploads/1/3/0/7/130776068/nopimajav-bevope.pdf'. The document body text is largely garbled but contains the same keyword as the malicious URL, suggesting a lure for users searching for educational materials.

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.ru/pify?keyword=cours+espagnol+pour+debutant+pdf
    • http://pikoruzaz.carolynmarconi.com/uploads/1/3/0/7/130776068/nopimajav-bevope.pdf
    • https://cdn.shopify.com/s/files/1/0431/2308/1378/files/lightning_protection_using_lfa_lightning_frequency_arrester.pdf
    • https://cdn.shopify.com/s/files/1/0435/3874/3450/files/fuzurokeboravakojogug.pdf
    • https://cdn.shopify.com/s/files/1/0440/3403/1766/files/wirawabawulivon.pdf
    • https://cdn.shopify.com/s/files/1/0437/7424/7069/files/8635599314.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/16946396068.pdf
    • https://cdn.shopify.com/s/files/1/0432/3183/8368/files/gogavemovobamakunoxuzel.pdf
    • https://cdn.shopify.com/s/files/1/0429/6127/2983/files/95297980541.pdf
    • https://cdn.shopify.com/s/files/1/0430/8362/8697/files/similar_meaning_words_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0432/7840/1700/files/green_eggs_and_ham_book.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_off00006984.bin
e88ca65ee75ac66736fa5fdc1f107489cc90fb47205921912f9ec813de17e6b5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6984 5256 bytes
font_01_sfnt_off00007b64.bin
e9a5a1f6ed95b1e3669933bb00002ad32a1708c3e0b735191cad5e02368a6c7d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B64 1800 bytes
font_02_sfnt_off000083f2.bin
397d170092796d657359ad987ce787ec662bda0be2762a2da32f305b61c8a225		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83F2 12716 bytes

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