Malicious PDF — malware analysis report

Static analysis result for SHA-256 240465bb7d93530f…

MALICIOUS

PDF

47.0 KB Created: 2020-08-12 15:30:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3ec260ab5baf8f45e3c00e5bd4985fe3 SHA-1: 989c4f6cb5c00173c3afcfe74509bc359d9af4b8 SHA-256: 240465bb7d93530f8f052b12e302d7121df8925f1bf8403e797527740cd587f5
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one prominent link directing to a known malicious redirector. The document body text, though partially corrupted, includes the search query 'Audacity manual español pdf', suggesting a lure to trick users into clicking the malicious link. No scripts were extracted, and the primary malicious behavior observed is the redirection to external, potentially harmful, content.

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=audacity+manual+espa%25C3%25B1ol+pdf
    • http://files.terrieiner.com/uploads/1/3/2/6/132681513/kuzevufilopesop-lotoxipox.pdf
    • http://files.nathanielpicardbusky.com/uploads/1/3/2/6/132681192/wuwotutute.pdf
    • http://files.bardgames.org/uploads/1/3/0/8/130874467/fc941a8d6552.pdf
    • http://files.buildingourfuturekc.org/uploads/1/3/0/7/130776416/14c945bd.pdf
    • http://files.allhottub.com/uploads/1/3/0/7/130775665/a1335f2f66e5c31.pdf
    • https://cdn.shopify.com/s/files/1/0434/0878/5562/files/43659893841.pdf
    • https://cdn.shopify.com/s/files/1/0432/9183/6566/files/bhagavad_gita_in_sanskrit_with_meaning.pdf
    • https://cdn.shopify.com/s/files/1/0438/2975/6066/files/putedotopafozuvixikijoj.pdf
    • https://cdn.shopify.com/s/files/1/0431/1613/4562/files/kojikusiwuvibido.pdf
    • https://cdn.shopify.com/s/files/1/0432/2584/1821/files/39098274454.pdf
    • https://cdn.shopify.com/s/files/1/0436/0473/8206/files/45755198443.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/74195332560.pdf
    • https://cdn.shopify.com/s/files/1/0435/2340/8032/files/milapizesomukojafifiti.pdf
    • https://cdn.shopify.com/s/files/1/0431/5706/1788/files/fidevoxizinonukuxoganek.pdf
    • https://cdn.shopify.com/s/files/1/0431/6259/9585/files/79839243387.pdf
    • https://cdn.shopify.com/s/files/1/0432/7781/1867/files/lion_king_dvd.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_off000077b8.bin
1142b7c07890656d373112b2b86e816fc7a0e422c61dac8ea01607436b3322c2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77B8 5508 bytes
font_01_sfnt_off00008a2b.bin
b08cbdfda46a5b749c69b68e92293c11aa16184945bb0269dbc24f18a6428c7f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A2B 10376 bytes

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