Malicious PDF — malware analysis report

Static analysis result for SHA-256 faad3133d5a9a171…

MALICIOUS

PDF

48.6 KB Created: 2020-08-15 06:17:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 891746fd14b8b854cce732c0b72be3bf SHA-1: 9203730a3b2f0bb610b9211cd8b9560c56174a9d SHA-256: faad3133d5a9a171b8a28ad10c8f6696a00b9be715659775da8190af05fc4149
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one identified as a known malicious redirector. The document body, though heavily obfuscated, appears to contain the URL 'https://ttraff.ru/pify?keyword=gem+lettuce+nutrition+information' which is flagged as malicious. The presence of numerous external links, many pointing to Shopify domains hosting PDF files, suggests a link farm or SEO manipulation tactic, potentially to obscure the malicious redirector.

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.ru/pify?keyword=gem+lettuce+nutrition+information
    • http://files.umpquavalleydrumlessons.com/uploads/1/3/2/6/132681304/4485764.pdf
    • http://files.cheriejsmith.com/uploads/1/3/1/6/131607103/159503.pdf
    • http://files.tricialockhart.com/uploads/1/3/1/4/131453124/roxabofitukupeb_kifewabiw_taxefetadedona.pdf
    • http://files.alliedfireandsafetylillington.com/uploads/1/3/1/4/131483317/b72eb71.pdf
    • http://files.drewhoover.com/uploads/1/3/1/0/131070774/fosopujowodesoze.pdf
    • https://cdn.shopify.com/s/files/1/0440/4133/9045/files/como_aprender_ingles_libros.pdf
    • https://cdn.shopify.com/s/files/1/0429/0448/6055/files/xulixu.pdf
    • https://cdn.shopify.com/s/files/1/0434/3237/8517/files/povesaxex.pdf
    • https://cdn.shopify.com/s/files/1/0429/5095/1066/files/7279847954.pdf
    • https://cdn.shopify.com/s/files/1/0432/3698/2944/files/23865453582.pdf
    • https://cdn.shopify.com/s/files/1/0428/8957/6601/files/77586632344.pdf
    • https://cdn.shopify.com/s/files/1/0430/8307/1642/files/tipos_de_cactus_y_suculentas.pdf
    • https://cdn.shopify.com/s/files/1/0430/7098/0247/files/roguberaliwigesozemef.pdf
    • https://cdn.shopify.com/s/files/1/0434/2556/2775/files/tewovukugadeluxodoluga.pdf
    • https://cdn.shopify.com/s/files/1/0433/9892/2392/files/mobug.pdf
    • https://cdn.shopify.com/s/files/1/0431/3051/9703/files/gigodexusixejutobaru.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_off000082d6.bin
86b48b5d4f26d634f9a6f803e8f790fcbd4389eddc0fc236da3ada7b5e6f45e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82D6 4880 bytes
font_01_sfnt_off0000935f.bin
47ada2fd09ff2286ea32aa06b79d0b6fc70b8f636b00829c1a0e3b85a3325c41		 pdf-font-stream PDF embedded font (sfnt) at offset 0x935F 9996 bytes

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