Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf19d46966b89ad6…

MALICIOUS

PDF

32.2 KB Created: 2020-08-14 18:45:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a886d008de6013dc33301c54b5b2b005 SHA-1: 7fc569d8fbcd152ed482b9ab7cbd97d0e08b7e31 SHA-256: bf19d46966b89ad6d16ff1ea6a86778893fb1a3e23f633f9d75d7b046983eb08
150 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one pointing to a known malicious redirector at 'https://ttraff.com/pify?keyword=daniel+e+samuel+absoluto+cd+completo'. This suggests the document's primary purpose is to lure users to a malicious site, likely for phishing or malware delivery. The presence of a link farm further supports this malicious intent.

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=daniel+e+samuel+absoluto+cd+completo
    • http://dajife.mayburydaycamp.com/uploads/1/3/1/4/131453150/wojiwewixogo.pdf
    • http://xudosi.sunfloweruk.com/uploads/1/3/1/6/131606027/titilaboxewabida.pdf
    • http://fitifuv.peacelutheranandover.com/uploads/1/3/2/7/132740585/kejogozujug-vawewoj-zigaz-pexivizekidax.pdf
    • http://files.petiakostadinova.net/uploads/1/3/1/6/131606211/af4f2fa.pdf
    • https://cdn.shopify.com/s/files/1/0434/4119/3110/files/xojoseno.pdf
    • https://cdn.shopify.com/s/files/1/0430/7753/3856/files/john_deere_tractor_refrigerant_capacity_chart.pdf
    • https://cdn.shopify.com/s/files/1/0431/6718/7108/files/43968688376.pdf
    • https://cdn.shopify.com/s/files/1/0430/4257/0402/files/50547330627.pdf
    • https://cdn.shopify.com/s/files/1/0431/4975/4519/files/gagafixesudog.pdf
    • https://cdn.shopify.com/s/files/1/0432/9072/2454/files/anatomy_and_physiology_lecture_notes_powerpoint.pdf
    • https://cdn.shopify.com/s/files/1/0430/5348/2137/files/boxhead_2_player_full_screen.pdf
    • https://cdn.shopify.com/s/files/1/0431/8330/8955/files/verset_biblique_d_encouragement_deuil.pdf
    • https://cdn.shopify.com/s/files/1/0437/6975/7850/files/62836146158.pdf
    • https://cdn.shopify.com/s/files/1/0427/3173/3159/files/konufusutaxofamojixemibat.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_off0000446c.bin
b269d3c312d6096c83d617ff4c12a797e0db77bdf475dd1a360e86587514fa20		 pdf-font-stream PDF embedded font (sfnt) at offset 0x446C 5264 bytes
font_01_sfnt_off00005633.bin
2dfefc9a9b06b030ae469801cd207df63e1f58a9c43cfc66c5ff83f221679638		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5633 8828 bytes

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