Malicious PDF — malware analysis report

Static analysis result for SHA-256 396cd65d6d9f3923…

MALICIOUS

PDF

50.3 KB Created: 2020-08-19 18:22:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b6e095d09eee1aa56e301ee765b1cc5c SHA-1: dafcfa520ec66251670552c8d15638f70b16fc9f SHA-256: 396cd65d6d9f3923d560a4c4add70eab577269e4b71503d6bfd3fbb42e632ea7
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body itself is heavily obfuscated but contains the URL 'https://ttraff.com/pify?keyword=waveguide+propagation+constant', which is likely used to redirect users to malicious content. The presence of numerous other PDF links suggests a link farm or SEO poisoning tactic to distribute malicious content.

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.com/pify?keyword=waveguide+propagation+constant
    • http://files.ayurglo.com/uploads/1/3/2/3/132302718/zadinirakutibit-xisivedonawer-xuludugo-makew.pdf
    • http://sajobe.vigaeatery.com/uploads/1/3/1/8/131856185/xakosorufikemonejof.pdf
    • http://files.welcometoamyland.com/uploads/1/3/1/4/131437515/gepozatogulaki-kufefugaji-bevojavire.pdf
    • http://files.serbaballet.com/uploads/1/3/0/8/130874377/xikosobuzojoxas-gevosap.pdf
    • http://dapefa.utahstudentnurse.org/uploads/1/3/1/4/131438304/vezoziwofu-nobizobenofusu.pdf
    • https://cdn.shopify.com/s/files/1/0430/3834/3322/files/78221046287.pdf
    • https://cdn.shopify.com/s/files/1/0428/6709/7756/files/gevesogepepodumaduzuforo.pdf
    • https://cdn.shopify.com/s/files/1/0448/1017/4630/files/cantos_coro_lldm.pdf
    • https://cdn.shopify.com/s/files/1/0430/9857/0909/files/kusaluvalizas.pdf
    • https://cdn.shopify.com/s/files/1/0434/1855/0430/files/41000562564.pdf
    • https://cdn.shopify.com/s/files/1/0430/4296/3613/files/xozalurowedo.pdf
    • https://cdn.shopify.com/s/files/1/0427/5827/5238/files/zegidatasim.pdf
    • https://cdn.shopify.com/s/files/1/0433/9492/4694/files/62015520820.pdf
    • https://cdn.shopify.com/s/files/1/0434/1281/6034/files/canon_6d_ii_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/8038/3653/files/52598007364.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_off0000677d.bin
9471f8694794df4d2e8c52a0abae1d4ecb060f0e05fa32d29476db718f2cde73
pdf-font-stream PDF embedded font (sfnt) at offset 0x677D 5284 bytes
font_01_sfnt_off00007994.bin
61769e2c5516433efc814b01c02688a21601f5ced211a06f1d285917b6fb95cf
pdf-font-stream PDF embedded font (sfnt) at offset 0x7994 14116 bytes
font_02_sfnt_off0000a643.bin
0ab4b5da5955669dacfcdcc8f4d6fe5fed632cfbd9ad7fab3dd8c3119d90804e
pdf-font-stream PDF embedded font (sfnt) at offset 0xA643 16280 bytes