Malicious PDF — malware analysis report

Static analysis result for SHA-256 9562d1678f531bea…

MALICIOUS

PDF

41.3 KB Created: 2020-09-19 05:37:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b94f27fab23fc7746d0e15ae45a4dba8 SHA-1: d28de7165bec4b1e025e1a84fd8c0ea6db656e77 SHA-256: 9562d1678f531bea925d61a2a4db46d286ba3e30c852e28fd9fdafb0aa6b2fae
150 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious domain, disguised as a service manual. This is further supported by heuristics indicating a malicious redirector link and a link farm designed for SEO manipulation. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the primary attack vector is the malicious link embedded within the document.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.club/wix?keyword=land+rover+service+manual
    • http://jijalazo.hounslowbathroomsupplies.com/uploads/1/3/2/3/132302921/140fd895d36.pdf
    • https://cdn.shopify.com/s/files/1/0433/3685/9813/files/lowotixiges.pdf
    • https://cdn.shopify.com/s/files/1/0460/1875/6767/files/lonovekajemerifurinidateb.pdf
    • https://cdn.shopify.com/s/files/1/0435/1646/1211/files/62928993982.pdf
    • https://c49c30ca-1120-4c42-8843-1a15edc98394.filesusr.com/ugd/529dbf_c1831cc27d6a4506ad567e005a229098.pdf?index=true
    • https://6f8f30b0-e4c5-418d-9212-97e4c0808f21.filesusr.com/ugd/8ff694_ee6bc3fd30264755ac97c91a0ae72678.pdf?index=true
    • https://eae6c743-08ff-4577-9a28-87f4f88f2c8e.filesusr.com/ugd/3aca14_7fb692b697434cef9c7a480fc98193b5.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0431/7128/3098/files/64459147900.pdf
    • https://cdn.shopify.com/s/files/1/0431/3861/3415/files/pazefajutoxatutakilu.pdf
    • https://cdn.shopify.com/s/files/1/0482/2931/8808/files/5680761063.pdf
    • https://cdn.shopify.com/s/files/1/0465/3170/7030/files/romeo_and_juliet_act_3_review_answers.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_off0000641a.bin
69ac064b53b0398462e3efb838ec1e9881e73a9d112a2732a8a06b3918ed498b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x641A 5088 bytes
font_01_sfnt_off0000755a.bin
6a746e2f2cc67311aed67b7524fc74ea4589220a2744cc33b4693b277da8e758		 pdf-font-stream PDF embedded font (sfnt) at offset 0x755A 10260 bytes

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