Malicious PDF — malware analysis report

Static analysis result for SHA-256 34824052bd169ca9…

MALICIOUS

PDF

40.6 KB Created: 2020-08-09 15:30:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8e40a54e31334de16a728ccab2286e0d SHA-1: 1068b653909f0554fa0a7e416266b994abaf378c SHA-256: 34824052bd169ca90f70082311e06f696ac57f00ebb81f7f83ef6fcfeae7a894
120 Risk Score

Malware Insights

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

The PDF contains a link farm designed to mimic search engine results, with a primary malicious redirector URL disguised as a Cisco CCNA lab workbook. The heuristic firings indicate the PDF is intentionally structured as a link farm and contains a malicious redirector. The embedded URLs are likely used to drive traffic to malicious sites or phishing pages.

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=cisco+ccna+lab+workbook+200+120+pdf
    • http://files.photonicpharma.com/uploads/1/3/0/7/130739285/a970842f8953bf.pdf
    • http://files.mytechoasis.com/uploads/1/3/1/4/131407802/tasulemixomogatasore.pdf
    • http://files.broughtoncambridgeshire.com/uploads/1/3/2/8/132814342/3113626.pdf
    • https://cdn.shopify.com/s/files/1/0428/3318/2886/files/97109383535.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bovegutug.pdf
    • https://cdn.shopify.com/s/files/1/0434/1969/7303/files/ringtones_for_kids.pdf
    • https://cdn.shopify.com/s/files/1/0435/4700/0983/files/birukurigodi.pdf
    • https://cdn.shopify.com/s/files/1/0428/6621/3031/files/39196058861.pdf
    • https://cdn.shopify.com/s/files/1/0429/7100/5082/files/barbara_oakley_books.pdf
    • https://cdn.shopify.com/s/files/1/0437/7726/1729/files/71736916809.pdf
    • https://cdn.shopify.com/s/files/1/0431/8189/9944/files/bus_eireann_120.pdf
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/ninoxijanada.pdf
    • https://cdn.shopify.com/s/files/1/0429/9728/5027/files/calculus_early_transcendentals_6th_edition_larson.pdf
    • https://cdn.shopify.com/s/files/1/0429/5956/9055/files/36442647545.pdf
    • https://cdn.shopify.com/s/files/1/0440/6509/5845/files/27235626611.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/67142307476.pdf
    • https://cdn.shopify.com/s/files/1/0430/4899/2930/files/80169621245.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_off00005f9d.bin
1b73c2b1e1ee5aaecce35eaf68e3093869b0f794cb237154ebcf30bdbaab9f91		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F9D 5676 bytes
font_01_sfnt_off00007315.bin
b35b025dc465de6176a500ca4a999ba520b8491168ef68b131d15c568e174f67		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7315 10060 bytes

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