Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae0077cf4410d3b4…

MALICIOUS

PDF

39.7 KB Created: 2020-08-12 22:31:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6667d67f41509d5a7bee3347d03c9f17 SHA-1: 5c8b74f0f91f57d5e4ccee97f23b1af8f08dfbab SHA-256: ae0077cf4410d3b443f2db80e1f36eefd63c2b3f05a23baf9e71fb1801ed3c75
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains a malicious redirector link to 'ttraff.com' which is likely used to chain further malicious downloads or phishing attempts. The document also exhibits characteristics of a link farm, embedding numerous external PDF links, and uses a social engineering lure to prompt the user to install a browser extension or update. No scripts were extracted from this sample, limiting the ability to determine specific payload delivery mechanisms.

Heuristics 4

  • 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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=bolt+thread+conversion+chart+pdf
    • http://files.themilev.org/uploads/1/3/0/7/130776861/5c5ce2d8dd9.pdf
    • http://foxemozi.satorifloatspa.com/uploads/1/3/2/6/132682076/buboxata.pdf
    • http://files.trebor-ts.com/uploads/1/3/1/8/131871690/4fa93.pdf
    • http://files.thecounselingcompanion.com/uploads/1/3/0/8/130874612/zogasarenefosomasi.pdf
    • https://cdn.shopify.com/s/files/1/0432/9262/3001/files/69196361954.pdf
    • https://cdn.shopify.com/s/files/1/0431/1734/6965/files/12487409204.pdf
    • https://cdn.shopify.com/s/files/1/0428/3544/3871/files/analysis_of_ordinal_categorical_data_agresti.pdf
    • https://cdn.shopify.com/s/files/1/0439/3422/0456/files/rasukorofosuba.pdf
    • https://cdn.shopify.com/s/files/1/0430/9758/7861/files/bovonezuwabubafazuvona.pdf
    • https://cdn.shopify.com/s/files/1/0430/0118/4417/files/87760431025.pdf
    • https://cdn.shopify.com/s/files/1/0435/4464/1695/files/muweliweketajomizutakaz.pdf
    • https://cdn.shopify.com/s/files/1/0435/6780/8667/files/58603195479.pdf
    • https://cdn.shopify.com/s/files/1/0430/6137/9221/files/fesubujupokosibifujawuv.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_off00005e1a.bin
4df72048bfae6bbfa4fbbb4bec4f596dad19ca62581f5e61dc4a0021f84d462f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E1A 5352 bytes
font_01_sfnt_off0000704b.bin
68c5ba03be9dd50ed18dcc77c360ba5e53918e2b216e10ac2cc57ce75b30421f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x704B 9892 bytes

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