Malicious PDF — malware analysis report

Static analysis result for SHA-256 e72901db51333348…

MALICIOUS

PDF

54.7 KB Created: 2020-09-01 13:58:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c350bb99174948efc9b214c703b0c271 SHA-1: 260777ed2bcd997a8fa88d1eb9d7ec417237e919 SHA-256: e72901db513333486e03b5f7cd6352a3d9db1857433c17c80bb4269bb2034d21
150 Risk Score

Malware Insights

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

This PDF document contains a link to a known malicious redirector, ttraff.com, which is likely intended to lead the user to a malicious site. The document body, though heavily obfuscated, contains the same malicious URL. The PDF also contains a large number of links to other PDFs hosted on Shopify, likely as part of an SEO poisoning or link farm tactic to obscure the malicious redirector.

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.com/wix?keyword=sinusite+fungica+tratamento+pdf
    • https://cdn.shopify.com/s/files/1/0429/9273/0275/files/cambridge_checkpoint_science_coursebook_7_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/2027/1264/files/58524115396.pdf
    • https://cdn.shopify.com/s/files/1/0432/5454/6594/files/pnrd_advertisement.pdf
    • https://cdn.shopify.com/s/files/1/0446/9224/2588/files/metikexopu.pdf
    • https://cdn.shopify.com/s/files/1/0429/3551/7337/files/resident_evil_4_apk_mod_english.pdf
    • https://cdn.shopify.com/s/files/1/0429/9902/1731/files/3992453596.pdf
    • https://cdn.shopify.com/s/files/1/0435/8642/0893/files/couper_page_par_page.pdf
    • https://cdn.shopify.com/s/files/1/0429/9161/6153/files/91971105147.pdf
    • https://cdn.shopify.com/s/files/1/0431/4791/9522/files/wodekolezabewemizo.pdf
    • https://cdn.shopify.com/s/files/1/0431/7960/6177/files/54152823205.pdf
    • https://cdn.shopify.com/s/files/1/0432/4678/0579/files/tenor_saxophone_arpeggios.pdf
    • https://cdn.shopify.com/s/files/1/0439/1262/6344/files/64922231845.pdf
    • https://cdn.shopify.com/s/files/1/0436/5844/4958/files/cristianismo_puro_e_simples.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_off00009859.bin
faa897ca33369b2910d1ed323e8f7a17337b1b00313aaf8e289655421ea0b4a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9859 5544 bytes
font_01_sfnt_off0000ab22.bin
58c17fa98fb878b65ad97336d6ac4ad391700487349e36b16a4969c602c006c2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAB22 10192 bytes

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