Malicious PDF — malware analysis report

Static analysis result for SHA-256 45f4c4d203927b16…

MALICIOUS

PDF

43.4 KB Created: 2020-08-15 16:38:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: add909f0bc98bd452b5ad3d67d1fe18a SHA-1: b1eeb8b94586f78160839c34457947a2abdbb0b5 SHA-256: 45f4c4d203927b16c7df571f1cfc7637e7303cfe0e7479e2a547f662fc9e0c6f
128 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body text, though heavily obfuscated, contains the same malicious URL. This suggests the PDF is designed to trick users into clicking the malicious link, likely to download further malware or redirect to a phishing site.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=aimbot+cs+1.+6+d3d
    • http://vuzoruw.nubim.net/uploads/1/3/0/7/130776138/2499671e5.pdf
    • http://files.stawardstation.co.uk/uploads/1/3/0/7/130776462/8750978.pdf
    • http://files.desipina.org/uploads/1/3/1/0/131070688/b7c7d.pdf
    • https://cdn.shopify.com/s/files/1/0432/3626/2050/files/kixowebesoxurijopurigone.pdf
    • https://cdn.shopify.com/s/files/1/0440/2728/1558/files/country_code_232.pdf
    • https://cdn.shopify.com/s/files/1/0432/5729/9097/files/jhin_build_guide_season_8.pdf
    • https://cdn.shopify.com/s/files/1/0439/1829/5195/files/vebodux.pdf
    • https://cdn.shopify.com/s/files/1/0432/3645/8654/files/calabozos_y_dragones_juego_de_mesa.pdf
    • https://cdn.shopify.com/s/files/1/0429/2149/2643/files/50554802941.pdf
    • https://cdn.shopify.com/s/files/1/0429/8774/9525/files/raloj.pdf
    • https://cdn.shopify.com/s/files/1/0433/4472/4133/files/93768756952.pdf
    • https://cdn.shopify.com/s/files/1/0434/0357/5454/files/91491204924.pdf
    • https://cdn.shopify.com/s/files/1/0433/7106/9594/files/pisadatunisagifegobojas.pdf
    • https://cdn.shopify.com/s/files/1/0436/9278/5818/files/install_boost_windows.pdf
    • https://cdn.shopify.com/s/files/1/0438/4620/5602/files/11th_science_biology_ncert_book_in_gujarati.pdf
    • https://cdn.shopify.com/s/files/1/0430/9866/9220/files/lopiduvosorijuxolozizum.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_off000054c3.bin
c55eae3e9f83f8753f8442299acbdc73f563db9a5c83d3fb0b18024066e5747f
pdf-font-stream PDF embedded font (sfnt) at offset 0x54C3 5276 bytes
font_01_sfnt_off000066a4.bin
20b1e74b93f26a72cf665f282c0d03b00446f279f098bf8101d47e3b6ebcb0dd
pdf-font-stream PDF embedded font (sfnt) at offset 0x66A4 10916 bytes
font_02_sfnt_off00008bc9.bin
db4279464ae946b1295b265db086341c944001c651e6f4d0f3238cfb21981fd7
pdf-font-stream PDF embedded font (sfnt) at offset 0x8BC9 16136 bytes