Malicious PDF — malware analysis report

Static analysis result for SHA-256 c93a2a024ceeba86…

MALICIOUS

PDF

40.8 KB Created: 2020-08-18 15:26:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1eb1855c5a039566549c19fbb89f6573 SHA-1: 9ac4ed991a46dff34787cb9b1fd9e63b7bc87872 SHA-256: c93a2a024ceeba86b71c9ebc35778134b7b0136ccf5b28c72870c7ccabd3f352
128 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link pointing to ttraff.com, which is flagged as malicious. It also features a large number of external PDF links, suggesting a link farm for SEO manipulation or to obscure malicious destinations. The presence of a visual download button lure further supports the malicious intent of redirecting the user to potentially harmful content.

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=chunkzz+malayalam+full+movie++720p
    • http://delet.tracyleighpottery.com/uploads/1/3/2/6/132681947/pazadowumuteg.pdf
    • http://files.deliahagen.com/uploads/1/3/0/8/130814475/gitepegiwereki_nebulegagazisu_xadejisonebit_lafodunukuguwa.pdf
    • http://files.inikamoze.com/uploads/1/3/1/8/131856398/1593531.pdf
    • https://cdn.shopify.com/s/files/1/0431/5417/8216/files/26687735632.pdf
    • https://cdn.shopify.com/s/files/1/0431/6862/8890/files/administracion_de_recursos_humanos_snell_y_bohlander.pdf
    • https://cdn.shopify.com/s/files/1/0429/6838/3642/files/nedagiseperolonan.pdf
    • https://cdn.shopify.com/s/files/1/0433/2398/1979/files/67890778187.pdf
    • https://cdn.shopify.com/s/files/1/0432/3619/6507/files/environmental_chemistry_baird_5th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0432/9000/1572/files/4727244720.pdf
    • https://cdn.shopify.com/s/files/1/0432/0854/0324/files/48504347308.pdf
    • https://cdn.shopify.com/s/files/1/0440/2230/0822/files/vocabulary_list_for_ielts_general.pdf
    • https://cdn.shopify.com/s/files/1/0432/6073/9752/files/51443922919.pdf
    • https://cdn.shopify.com/s/files/1/0431/9703/8756/files/xoraroxunokovaz.pdf
    • https://cdn.shopify.com/s/files/1/0430/0426/4601/files/9527773861.pdf
    • https://cdn.shopify.com/s/files/1/0431/6053/5196/files/editable_d_d_5e_character_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0432/7643/5621/files/fexit.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_off00004abf.bin
fc57412219477cda5a3dcdfa8bbf007a1e88f03aebb523ec2ee5f897c10b0866
pdf-font-stream PDF embedded font (sfnt) at offset 0x4ABF 5404 bytes
font_01_sfnt_off00005d13.bin
e58116eed9bc8dd3295582ae7f6ae349d95591b07f8a48cf04ea93e057cbea48
pdf-font-stream PDF embedded font (sfnt) at offset 0x5D13 10080 bytes
font_02_sfnt_off00007fc4.bin
660d05b38fea380e8cc13f4a5a7db764e9bd2a20a73145a73af50c118749f22b
pdf-font-stream PDF embedded font (sfnt) at offset 0x7FC4 16060 bytes