Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b26e069976d2599…

MALICIOUS

PDF

35.0 KB Created: 2020-08-03 04:17:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 70fd3a64fb93a2dbef448f5059fb6e64 SHA-1: 28ff08b2898567d8f5536fe7e2f4ff762a707e75 SHA-256: 8b26e069976d259993f94550043c39e1e804f24aa2f0591844d7172ce957dc9f
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1059.001 Command and Scripting Interpreter: PowerShell

The PDF contains a link farm and a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains the URL that is likely intended to lure the user into clicking it. The primary malicious URL is ttraff.com, which is used in conjunction with a keyword search for 'dungeons and dragons pdf 3.5 books' to appear as a legitimate download. The PDF also contains numerous links to shopify.com, likely for SEO manipulation or to host decoy files.

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=dungeons+and+dragons+pdf+3.+5+books
    • http://files.frenchfluteteacher.com/uploads/1/3/0/7/130776619/6538715.pdf
    • http://files.missionsquarewhittier.com/uploads/1/3/1/4/131437276/sunozeg.pdf
    • http://files.prezziessugarloaf.com/uploads/1/3/1/6/131606537/7323635.pdf
    • http://nefame.tunedincoach.com/uploads/1/3/1/4/131408024/bomoval.pdf
    • http://files.hocrane.com/uploads/1/3/2/7/132740564/kuwojikixanis_vezesuki_xitulibis_laxijolotalin.pdf
    • https://cdn.shopify.com/s/files/1/0434/6265/6157/files/pavixemirivorebedo.pdf
    • https://cdn.shopify.com/s/files/1/0434/3195/2536/files/41150835913.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wadilizesiwegokadokepub.pdf
    • https://cdn.shopify.com/s/files/1/0430/6993/1673/files/doing_right_philip_hebert.pdf
    • https://cdn.shopify.com/s/files/1/0432/0778/6657/files/mululurej.pdf
    • https://cdn.shopify.com/s/files/1/0432/1381/5966/files/zupax.pdf
    • https://cdn.shopify.com/s/files/1/0437/3318/8759/files/65164730842.pdf
    • https://cdn.shopify.com/s/files/1/0430/0357/6481/files/power_king_tractor_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/6690/1148/files/jomuvelokezi.pdf
    • https://cdn.shopify.com/s/files/1/0437/7506/6274/files/88516273727.pdf
    • https://cdn.shopify.com/s/files/1/0428/9557/3158/files/besofipig.pdf
    • https://cdn.shopify.com/s/files/1/0432/9511/3374/files/setotijefetujaj.pdf
    • https://cdn.shopify.com/s/files/1/0439/9779/0366/files/36284222264.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_off00004a3f.bin
df7c7cfc01ba621ff6c6e1cd53b50df0801858f4ba699f1c53f21d0ccfbec6b6
pdf-font-stream PDF embedded font (sfnt) at offset 0x4A3F 5700 bytes
font_01_sfnt_off00005dca.bin
292122587e8993c02e107c8fd306cb1f6404ad43f94f7d2482dbad5722dbc984
pdf-font-stream PDF embedded font (sfnt) at offset 0x5DCA 9692 bytes