Malicious PDF — malware analysis report

Static analysis result for SHA-256 cae18b107e6238d2…

MALICIOUS

PDF

55.8 KB Created: 2020-08-15 18:40:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 589a86bee8bdb4a63ffca13addeb9e88 SHA-1: 821228a267ef7c67828448548fd42d0cedfdcd4d SHA-256: cae18b107e6238d21774d8386d68ddae7b4ff236d1dbc04235190fa2d0c32f1d
120 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is designed to lead users to further malicious content. The document body, though heavily obfuscated, contains text related to 'Federalist 51 guided reading graphic organizer answers' and includes the malicious URL, suggesting a lure to disguise the malicious intent. The presence of a link farm heuristic further indicates an attempt to distribute malicious 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.com/pify?keyword=federalist+51+guided+reading+graphic+organizer+answers
    • http://files.veronequeignace.com/uploads/1/3/1/3/131380467/vurebutokokomodiruji.pdf
    • https://cdn.shopify.com/s/files/1/0429/9256/6435/files/savijezirawiwiva.pdf
    • https://cdn.shopify.com/s/files/1/0431/0417/4233/files/75759951759.pdf
    • https://cdn.shopify.com/s/files/1/0430/4951/7205/files/3378384739.pdf
    • https://cdn.shopify.com/s/files/1/0431/9592/4637/files/jezuzoridenenenevekodeg.pdf
    • https://cdn.shopify.com/s/files/1/0435/2134/3647/files/active_passive_sentences.pdf
    • https://cdn.shopify.com/s/files/1/0450/8683/4851/files/berarakawuzokenalaporarik.pdf
    • https://cdn.shopify.com/s/files/1/0439/6145/0654/files/12684081124.pdf
    • https://cdn.shopify.com/s/files/1/0438/6809/4629/files/rinorusovoletegaduxi.pdf
    • https://cdn.shopify.com/s/files/1/0431/6083/0116/files/telugu_academy_books_for_intermediate_1st_year_botany.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_off00009c16.bin
4a79e60fb3f8080ff2774072a32417ebc49602ba5cd75b7b5a7ce81fec718de3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9C16 5608 bytes
font_01_sfnt_off0000af36.bin
d301aec4a37f2cd861760a3d52185000a6ecdc9bdd03c8ff941cf82e9b2ca031		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAF36 10440 bytes

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