Malicious PDF — malware analysis report

Static analysis result for SHA-256 317ce1a64910bef2…

MALICIOUS

PDF

40.7 KB Created: 2020-08-09 02:09:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a6494150b6ac1942988b7b402ab878fb SHA-1: c7ec61fc585d996a7393eb000e10bb2110fcf61f SHA-256: 317ce1a64910bef24fd4bacd8c939cd2e8d0c1d69f3d9a0ea50c4639a36cc1bd
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link pointing to 'ttraff.com', which is flagged as malicious. It also features a large number of external links, many hosted on Shopify, suggesting a link farm or SEO manipulation tactic. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=booty+band+workouts+pdf', indicating the primary lure. The ML classifier strongly flagged this PDF as malicious.

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/pify?keyword=booty+band+workouts+pdf
    • http://files.barredwoodsmaple.com/uploads/1/3/0/7/130775760/9166758.pdf
    • http://files.heidiaphroditejewelry.com/uploads/1/3/2/6/132681749/1626906.pdf
    • http://files.titansinvite.com/uploads/1/3/1/6/131607522/lomina_vutunifurep_rudorifopagu.pdf
    • http://files.richbrownies.com/uploads/1/3/1/4/131453989/2507458a1ea756.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zijuk.pdf
    • https://cdn.shopify.com/s/files/1/0431/4267/6648/files/73732886814.pdf
    • https://cdn.shopify.com/s/files/1/0429/6074/8695/files/potuxawoz.pdf
    • https://cdn.shopify.com/s/files/1/0432/5572/6238/files/sozorejolutipugawivabiw.pdf
    • https://cdn.shopify.com/s/files/1/0437/1136/5288/files/small_flame_sac_vanilla.pdf
    • https://cdn.shopify.com/s/files/1/0436/6575/2217/files/65321541606.pdf
    • https://cdn.shopify.com/s/files/1/0433/4718/1718/files/68987099800.pdf
    • https://cdn.shopify.com/s/files/1/0431/2779/9969/files/untethered_angel_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0428/5068/0991/files/fowizajutasameboxul.pdf
    • https://cdn.shopify.com/s/files/1/0428/8184/3353/files/77615722254.pdf
    • https://cdn.shopify.com/s/files/1/0439/2511/0952/files/21_cfr_820_part_11.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_off0000618d.bin
041069f1f66226c21f61eb3a4c193256bf6134f3e105e045676b9415e081bbf8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x618D 5452 bytes
font_01_sfnt_off0000743c.bin
3251b1435147ee1832e3692ff160b77d779f9a31da6e4f1dc12c3d9a5d067539		 pdf-font-stream PDF embedded font (sfnt) at offset 0x743C 9908 bytes

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