Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffd7e60d523758f0…

MALICIOUS

PDF

34.1 KB Created: 2020-08-06 05:16:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3d2cc661a6456df480546482681cdc0f SHA-1: e9dbc27fe2762260fcca68195d5a6a72117e2c75 SHA-256: ffd7e60d523758f0b6dc222c34f1c201fede225c291466f2eb1cda17b9b1296e
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic identifying a malicious redirector. The document body, though heavily obfuscated, includes the URL 'https://ttraff.ru/pify?keyword=arquitectura+de+computadoras+morris+mano+pdf', which is flagged as malicious. This suggests the document's primary purpose is to redirect users to malicious infrastructure, likely for phishing or malware distribution, under the guise of providing a technical document.

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=arquitectura+de+computadoras+morris+mano+pdf
    • http://files.paulwaldau.com/uploads/1/3/1/8/131858791/eb4dad53135513.pdf
    • http://files.laidlawlandscape.com/uploads/1/3/0/7/130775432/rixulo_kolakanal.pdf
    • http://files.aftasmirleft.com/uploads/1/3/1/6/131607053/pewugenufupokojesod.pdf
    • https://cdn.shopify.com/s/files/1/0447/8697/4869/files/bookshelf_speakers_plans.pdf
    • https://cdn.shopify.com/s/files/1/0438/2110/5309/files/zoxunezibolekulofepudabu.pdf
    • https://cdn.shopify.com/s/files/1/0429/3161/7945/files/91392435182.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/65294746239.pdf
    • https://cdn.shopify.com/s/files/1/0433/1975/4907/files/3850184588.pdf
    • https://cdn.shopify.com/s/files/1/0437/7349/3406/files/zomimidatisi.pdf
    • https://cdn.shopify.com/s/files/1/0437/4256/0407/files/juruvunafajovaremepaku.pdf
    • https://cdn.shopify.com/s/files/1/0431/9769/4109/files/oscilloscope_file.pdf
    • https://cdn.shopify.com/s/files/1/0445/4249/2836/files/approach_to_management.pdf
    • https://cdn.shopify.com/s/files/1/0429/7634/6266/files/32232325868.pdf
    • https://cdn.shopify.com/s/files/1/0432/5769/2315/files/11506050635.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bewewolifokolugetu.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_off000047d2.bin
d194ae97d2105cacb7fa5cb450f87446fd18b2d407f444fdabeb596e4e0c39dd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x47D2 5384 bytes
font_01_sfnt_off00005a0c.bin
d86a2b7c0c3b0d6355b0c28067ae4ecfcdd38a3e67f9dd1b68049780bbf2631f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A0C 9680 bytes

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