Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbaa782cf1e84b4a…

MALICIOUS

PDF

46.3 KB Created: 2020-07-31 01:45:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4d1c0287611c0d4cc9d637dcfb62ac4f SHA-1: 51425c38a56d8564d1f1e076a5056a2620235876 SHA-256: fbaa782cf1e84b4aa13057323e05e9f3554f8664183979684be487d14ea5155f
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a PDF link farm. One of these links points to a known malicious redirector, ttraff.com, which is likely used to obscure the final malicious destination. The presence of a link farm suggests an attempt to manipulate search engine results or to host a large number of phishing lures.

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=mathematical+analysis+kg+binmore+pdf
    • http://files.existentialbiker.com/uploads/1/3/2/3/132303099/gobob.pdf
    • http://files.mission-justice.org/uploads/1/3/0/7/130775027/d2b8a429f.pdf
    • http://files.thecarmaven.net/uploads/1/3/2/7/132740377/kupot.pdf
    • http://files.emilylwebb.com/uploads/1/3/1/3/131382032/b2422b6499d0c27.pdf
    • http://files.emilylwebb.com/uploads/1/3/1/3/131382032/b2422b6499d0c27.p
    • https://cdn.shopify.com/s/files/1/0430/8621/7365/files/napokutami.pdf
    • https://cdn.shopify.com/s/files/1/0430/7176/6690/files/zasimazitubuzabomapag.pdf
    • https://cdn.shopify.com/s/files/1/0429/0406/0071/files/pedesezizulebesugexuta.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bobidaxida.pdf
    • https://cdn.shopify.com/s/files/1/0438/4423/9510/files/loriseperuxure.pdf
    • https://cdn.shopify.com/s/files/1/0435/4555/9189/files/69949129173.pdf
    • https://cdn.shopify.com/s/files/1/0435/8710/9023/files/29613868556.pdf
    • https://cdn.shopify.com/s/files/1/0429/2273/7830/files/gezegelimimetuzazoguk.pdf
    • https://cdn.shopify.com/s/files/1/0432/4425/7442/files/tinidofow.pdf
    • https://cdn.shopify.com/s/files/1/0432/6971/8182/files/25693296359.pdf
    • https://cdn.shopify.com/s/files/1/0434/6963/5746/files/gibejawanebotaro.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_off0000766c.bin
075ec606db9b8b3f75d92b3212d079bb1b41cf0aaf94b81beaf5b2567f1a1411		 pdf-font-stream PDF embedded font (sfnt) at offset 0x766C 5668 bytes
font_01_sfnt_off00008997.bin
59e61a384e2279760ca648cd82e1bcf21b676e5234c8c1feb09d4d908afb3dcb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8997 9996 bytes

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