Malicious PDF — malware analysis report

Static analysis result for SHA-256 e32eeeb9e21b2bfd…

MALICIOUS

PDF

46.5 KB Created: 2020-08-27 15:20:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: af28d0e27ba213b1b34e532628301e68 SHA-1: ded6755e1437ce5a16dfcadf3117d5d66cf7686a SHA-256: e32eeeb9e21b2bfd2ec6f4a97890dab4b842927871283f17ead5b7300ac659d5
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/pify?keyword=mobilityware+spider+solitaire'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, including one to 'https://cdn.shopify.com/s/files/1/0430/0252/7897/files/rosewill_rnx_n250pce_driver.pdf'. The ML classifier strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the malicious URL.

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=mobilityware+spider+solitaire
    • http://files.kinbasketlakeresort.com/uploads/1/3/2/8/132814276/girodog-vumutibagubiv-kuxerakozijopo-sukejo.pdf
    • http://lijupu.angelmountaininspirations.com/uploads/1/3/1/3/131398472/dojomibadojasopar.pdf
    • http://bojopoxoj.wooddavis.com/uploads/1/3/1/6/131636612/samozepi.pdf
    • http://files.fontanafoundry.com/uploads/1/3/1/8/131856476/wudimopiriv.pdf
    • http://files.exclusiveboutique.co.uk/uploads/1/3/2/6/132695830/vasasevofewat.pdf
    • https://cdn.shopify.com/s/files/1/0430/0252/7897/files/rosewill_rnx_n250pce_driver.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/riwemabosemuridaredexe.pdf
    • https://cdn.shopify.com/s/files/1/0434/5305/5128/files/breezin_tab.pdf
    • https://cdn.shopify.com/s/files/1/0437/1080/8216/files/ninuvixotadar.pdf
    • https://cdn.shopify.com/s/files/1/0432/1047/3633/files/54606944698.pdf
    • https://cdn.shopify.com/s/files/1/0438/8922/9979/files/801671961.pdf
    • https://cdn.shopify.com/s/files/1/0437/3364/7509/files/pisowugexavunuxuririkiw.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lipowu.pdf
    • https://cdn.shopify.com/s/files/1/0432/9222/9787/files/64883393171.pdf
    • https://cdn.shopify.com/s/files/1/0447/9077/5965/files/alternative_investments_caia_level_ii_3rd_edition.pdf
    • https://cdn.shopify.com/s/files/1/0428/2328/6940/files/91467081170.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_off0000771b.bin
00d47dd7f21a7aade9b70909c2420428801169123559c202967047362de3242f
pdf-font-stream PDF embedded font (sfnt) at offset 0x771B 5292 bytes
font_01_sfnt_off00008931.bin
4dad3310c1e211feac2a398480a8a841b4d0d6fa83a788c0ec408789deeea793
pdf-font-stream PDF embedded font (sfnt) at offset 0x8931 10444 bytes