Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd996014f816f206…

MALICIOUS

PDF

47.9 KB Created: 2020-08-11 23:04:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 40fd973dafb0b1b3adc95dbf684d9f22 SHA-1: ef4151a86a512a455d77b16436048fa001738c9d SHA-256: bd996014f816f206bae2dccb3e64e5cee5ffae70d81dffc74bcc7807e30f487c
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a common tactic for link farms and redirectors. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=basic+vba+tutorial+excel+2020+pdf'. The document body, though heavily obfuscated, contains text related to 'basic vba tutorial excel 2020 pdf', suggesting a lure to disguise the malicious intent. The presence of multiple Shopify-hosted PDF links further indicates a link farm strategy.

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=basic+vba+tutorial+excel+2020+pdf
    • http://files.ahandymommy.com/uploads/1/3/0/7/130775588/zobafufagula.pdf
    • http://files.hartfordpriest.com/uploads/1/3/2/6/132695651/wudufoxomuke-xotomagarowagix-vafofuketafe-xijadizizubefi.pdf
    • http://larasedu.saintsnetballclubgisborne.com/uploads/1/3/1/4/131438379/f59d2759710fd.pdf
    • https://cdn.shopify.com/s/files/1/0438/9067/1771/files/amadou_hampate_ba_livre.pdf
    • https://cdn.shopify.com/s/files/1/0434/2074/5893/files/fawowozuseluxubopenagexu.pdf
    • https://cdn.shopify.com/s/files/1/0435/7944/1307/files/6973375131.pdf
    • https://cdn.shopify.com/s/files/1/0430/6812/9441/files/actos_administrativos.pdf
    • https://cdn.shopify.com/s/files/1/0431/2019/7789/files/90904012375.pdf
    • https://cdn.shopify.com/s/files/1/0431/5214/6587/files/daguvutep.pdf
    • https://cdn.shopify.com/s/files/1/0431/4903/3640/files/jizibubanixejufob.pdf
    • https://cdn.shopify.com/s/files/1/0435/8114/5243/files/sosugiledezarogidikinov.pdf
    • https://cdn.shopify.com/s/files/1/0437/0841/6168/files/church_street_blues_chords.pdf
    • https://cdn.shopify.com/s/files/1/0437/5969/8077/files/4805977658.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/2860038855.pdf
    • https://cdn.shopify.com/s/files/1/0437/6150/0309/files/darwin_theory.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006bc0.bin
7abb50a771144f6206b5ada777bdea15afc857c97c6b41eebe2733d0ff79c211
pdf-font-stream PDF embedded font (sfnt) at offset 0x6BC0 5516 bytes
font_01_sfnt_off00007e91.bin
53a297e4ff453804f44a3c906d580d41087616edf569e5a39149a36d4874cfd9
pdf-font-stream PDF embedded font (sfnt) at offset 0x7E91 11696 bytes
font_02_sfnt_off0000a4e1.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3
pdf-font-stream PDF embedded font (sfnt) at offset 0xA4E1 4324 bytes