Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a9a99afa0cfdee8…

MALICIOUS

PDF

34.0 KB Created: 2020-08-18 14:12:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6e79b74f239220298e9ced1c6c7f78fe SHA-1: 48384a9c334167457065f4a4d1c172afa0938793 SHA-256: 9a9a99afa0cfdee8b3cc3e9663748a276c20cb56830b1c75cec4fe56e44f7aa9
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to `https://ttraff.cc/pify?keyword=hartshill+school+ofsted+report+2017`. This link is embedded within the document body, suggesting a social engineering lure to trick users into clicking it. The document also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on `cdn.shopify.com`, likely to improve search engine ranking for deceptive 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.cc/pify?keyword=hartshill+school+ofsted+report+2017
    • http://files.simonbradfieldphotography.com/uploads/1/3/0/7/130739155/1494997.pdf
    • http://files.windsweptpoodles.net/uploads/1/3/0/7/130738675/1309d765a1.pdf
    • http://files.waiwichita.org/uploads/1/3/0/8/130814351/xobedax.pdf
    • http://files.phimi.pt/uploads/1/3/1/8/131871569/jojikupikavamef.pdf
    • https://cdn.shopify.com/s/files/1/0434/4355/2416/files/rovunup.pdf
    • https://cdn.shopify.com/s/files/1/0433/0645/1094/files/wedag.pdf
    • https://cdn.shopify.com/s/files/1/0428/4655/2227/files/79345680193.pdf
    • https://cdn.shopify.com/s/files/1/0432/2348/2525/files/jspdf_autotable_font_style.pdf
    • https://cdn.shopify.com/s/files/1/0435/3510/6203/files/anger_management_therapy.pdf
    • https://cdn.shopify.com/s/files/1/0428/8082/7558/files/telugu_baadshah_movie_songs_free.pdf
    • https://cdn.shopify.com/s/files/1/0438/0635/9714/files/pirokopurij.pdf
    • https://cdn.shopify.com/s/files/1/0436/2957/6352/files/how_to_download_fonts_to_word.pdf
    • https://cdn.shopify.com/s/files/1/0431/0564/8791/files/rapid_typing_for_windows_10.pdf
    • https://cdn.shopify.com/s/files/1/0453/2695/8747/files/gisowagoboluveraraxunebux.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_off000047ee.bin
85b1b1cc398c7f2eaebce2ec9375f239e96a52697c2519bdecb13d3f5e6fa8ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x47EE 5608 bytes
font_01_sfnt_off00005afb.bin
91d1d0ffec13a94116d65bed5f6f3abfb32012eb4827827187990c8930b0a5e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5AFB 9500 bytes

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