Malicious PDF — malware analysis report

Static analysis result for SHA-256 986c1950cdde2c12…

MALICIOUS

PDF

56.4 KB Created: 2020-08-21 00:02:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3c8505c6c7309dc8ad9ef4fda30af13f SHA-1: 35af5b6dcf0b25b8dde1661215c4560b117da3c0 SHA-256: 986c1950cdde2c124bda1d6ef8bd37baea080a534c4313fa86ff99302b238660
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=socialismo+y+capitalismo+libros+pdf'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. The document body, though heavily obfuscated, also contains this URL, reinforcing the malicious intent. No scripts were extracted, and the family is unknown due to the lack of further indicators.

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=socialismo+y+capitalismo+libros+pdf
    • http://files.smallboatsalmon.com/uploads/1/3/2/8/132814024/bca7451b73.pdf
    • https://cdn.shopify.com/s/files/1/0429/0910/6343/files/android_phones_under_30000_in_pakistan.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xokuwunojuvilil.pdf
    • https://cdn.shopify.com/s/files/1/0433/0304/3230/files/bavakuligugimobinokux.pdf
    • https://cdn.shopify.com/s/files/1/0427/7121/8588/files/zelabas.pdf
    • https://cdn.shopify.com/s/files/1/0439/0912/0152/files/58350022515.pdf
    • https://cdn.shopify.com/s/files/1/0430/4040/7701/files/19410154878.pdf
    • https://cdn.shopify.com/s/files/1/0432/6601/5396/files/sindrome_absorcion_intestinal_deficiente.pdf
    • https://cdn.shopify.com/s/files/1/0431/2439/2093/files/30967417189.pdf
    • https://cdn.shopify.com/s/files/1/0439/4775/3640/files/lulurigewimokabususitoju.pdf
    • https://cdn.shopify.com/s/files/1/0435/4847/5541/files/accounts_payable_notes_in_sap_fico.pdf
    • https://cdn.shopify.com/s/files/1/0440/7325/5062/files/46628340998.pdf
    • https://cdn.shopify.com/s/files/1/0428/5405/6092/files/precalculus_with_limits_larson_second_edition.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_off00008d8e.bin
b2dfca0c31c7468178d25429bb5454a913d13fe2f99055a956c5392a230db3a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D8E 5208 bytes
font_01_sfnt_off00009f2e.bin
6fc9ed59b34860b4b8f3d6cdb4136e3b86ba6844d590655fac9da9d077140b0e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9F2E 11776 bytes
font_02_sfnt_off0000c534.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC534 4324 bytes

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