Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d86ee3ff3f2fff4…

MALICIOUS

PDF

38.4 KB Created: 2020-08-31 03:44:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8ea04da69f97fa6fa519d404c2c6ac8b SHA-1: 456c92e3edd465952b87d9d90b8da6fc8e461bcd SHA-256: 1d86ee3ff3f2fff4ccf6bfc95e4aefefa71a53907792587f6ac6480544d40609
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=settlers+of+catan+free+printable'. The document body also contains this URL, suggesting it's the primary lure. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to benign Shopify domains, likely to improve search engine ranking for the malicious content. No scripts were extracted, and the PDF structure itself does not indicate exploitation.

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/wix?keyword=settlers+of+catan+free+printable
    • https://cdn.shopify.com/s/files/1/0429/7369/2063/files/comparative_superlative_adjectives_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0435/0777/7700/files/44533028243.pdf
    • https://cdn.shopify.com/s/files/1/0432/8043/3310/files/78627644900.pdf
    • https://cdn.shopify.com/s/files/1/0433/7221/6483/files/chemistry_notes_for_class_12_electrochemistry.pdf
    • https://cdn.shopify.com/s/files/1/0431/6433/6290/files/jetemapu.pdf
    • https://cdn.shopify.com/s/files/1/0435/1816/5146/files/84090562916.pdf
    • https://cdn.shopify.com/s/files/1/0431/9592/4640/files/bulletin_de_salaire_ivoirien.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/229905594.pdf
    • https://cdn.shopify.com/s/files/1/0434/9100/0472/files/43054102569.pdf
    • https://static.usrfiles.com/ugd/739437_00124d74451847d0908cac3db9839c2a.pdf
    • https://static.usrfiles.com/ugd/b8c837_d3b3e9e6523146d191ab8bd65508d732.pdf
    • https://static.usrfiles.com/ugd/9e53d4_aa23544feb18400c810729ad60e1c754.pdf
    • https://static.usrfiles.com/ugd/0aab01_be69a46458344c93950c146ef366c407.pdf
    • https://static.usrfiles.com/ugd/e73fea_f420bddf6cc84352ba59531134704369.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_off00005832.bin
b58cd610dc85b26e2672ecebb300412ece00a090c2d190f95dd43a857a62c21b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5832 5252 bytes
font_01_sfnt_off00006a11.bin
7b6f5278fd939dbe4b348a10ea31092ef918c8d1b24afd362c997c3c3c8f4ad6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A11 10120 bytes

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