Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0aa1ea001a5cc6e…

MALICIOUS

PDF

82.0 KB Created: 2020-08-16 17:14:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 04cea7bf128772ad757042334755f7b0 SHA-1: f0dbe425ee1547d5810fc3c994804159293d394c SHA-256: d0aa1ea001a5cc6ecbc2a06c6726764c2a69a19406f7484814bc1a24a1226528
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=what+does+contemplated+mean+in+a+sentence'. It also exhibits characteristics of a link farm, with numerous external PDF links, many hosted on Shopify. The document body, though heavily obfuscated, contains the same malicious URL. This suggests the PDF's primary purpose is to redirect users to malicious infrastructure.

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.ru/pify?keyword=what+does+contemplated+mean+in+a+sentence
    • http://pigiruku.dumbingdownamerica.net/uploads/1/3/1/3/131381762/e91a046.pdf
    • http://files.empowerednation.net/uploads/1/3/1/4/131453406/zuraripedigogenuxo.pdf
    • http://files.fullgospelrestoration.com/uploads/1/3/2/7/132740337/wifakefovuwes.pdf
    • http://files.alexhancook.com/uploads/1/3/2/6/132680860/vifofati-muxep-sabutuw-digovobud.pdf
    • http://files.systematicbiologysa.org/uploads/1/3/1/8/131871488/botanezowuven_kamatotarisoxan.pdf
    • https://cdn.shopify.com/s/files/1/0432/5752/8480/files/twitter_discord_bot.pdf
    • https://cdn.shopify.com/s/files/1/0435/2730/7416/files/jspdf_autotable_npm_install.pdf
    • https://cdn.shopify.com/s/files/1/0430/6770/3457/files/84827114505.pdf
    • https://cdn.shopify.com/s/files/1/0433/7955/6504/files/ahsanul_bayan_urdu_darussalam.pdf
    • https://cdn.shopify.com/s/files/1/0440/7522/1144/files/microsoft_access_manual_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/5625/1559/files/w9_printable.pdf
    • https://cdn.shopify.com/s/files/1/0435/3998/8648/files/automatic_products_vending_machine_hack.pdf
    • https://cdn.shopify.com/s/files/1/0437/6317/1485/files/tevewuboralutuf.pdf
    • https://cdn.shopify.com/s/files/1/0428/4809/2323/files/gakijusanoxiwesopugulofi.pdf
    • https://cdn.shopify.com/s/files/1/0437/5206/3125/files/path_of_exile_ranger_build_beginner.pdf
    • https://cdn.shopify.com/s/files/1/0435/4369/1413/files/balai_chand_mukhopadhyay.pdf
    • https://cdn.shopify.com/s/files/1/0431/7714/8571/files/79738568260.pdf
    • https://cdn.shopify.com/s/files/1/0428/8197/4435/files/nikukevagebizotana.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_off00010029.bin
eb7de48bced3d8fb53404ee0608b7674c7768448219e55e67c4cc5a707e14442
pdf-font-stream PDF embedded font (sfnt) at offset 0x10029 5232 bytes
font_01_sfnt_off000111d5.bin
666f07780373719ceda9731b8d40473870ac848639844e72271c8e07153b1c2c
pdf-font-stream PDF embedded font (sfnt) at offset 0x111D5 11556 bytes