Malicious PDF — malware analysis report

Static analysis result for SHA-256 8074c36cb04cf99f…

MALICIOUS

PDF

51.3 KB Created: 2020-08-26 18:02:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 63f544fee0a712b1ab09f3558ef505b9 SHA-1: 6e9fcbc4a345695bc1319780e9a2e8fa4ce90828 SHA-256: 8074c36cb04cf99f5ded2fdc36127df19b07fadf4abaca588ef213d694f8e938
128 Risk Score

Malware Insights

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

The PDF file contains a malicious redirector link and a large number of external PDF links, suggesting a link farm for SEO manipulation or to host further malicious content. The presence of a visual download button lure further supports a phishing or social engineering attack. The primary malicious URL is ttraff.ru, which redirects to a 'showbox waiting for download' page, indicating a likely attempt to trick the user into downloading a payload.

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.ru/pify?keyword=showbox+waiting+for+download
    • http://files.benshapirophoto.com/uploads/1/3/2/6/132682851/juwok-vavude-jivomuxujam-pafogat.pdf
    • http://files.sydneynewhorizons.org/uploads/1/3/2/7/132710787/lozaratorepu_tatira.pdf
    • https://cdn.shopify.com/s/files/1/0428/2767/7852/files/90929604368.pdf
    • https://cdn.shopify.com/s/files/1/0438/1055/4016/files/61017234923.pdf
    • https://cdn.shopify.com/s/files/1/0433/6753/0655/files/janssen_pharmaceuticals_inc_annual_report.pdf
    • https://cdn.shopify.com/s/files/1/0438/3752/2085/files/la_bataille_de_la_somme.pdf
    • https://cdn.shopify.com/s/files/1/0429/9993/9235/files/28365760109.pdf
    • https://cdn.shopify.com/s/files/1/0432/0319/9138/files/anaconda_navigator_jupyter.pdf
    • https://cdn.shopify.com/s/files/1/0433/1687/1333/files/70938395351.pdf
    • https://cdn.shopify.com/s/files/1/0451/4293/3657/files/emil_cioran_breviario_de_los_vencidos.pdf
    • https://cdn.shopify.com/s/files/1/0433/2562/0374/files/43885440054.pdf
    • https://cdn.shopify.com/s/files/1/0430/2821/8010/files/zunewox.pdf
    • https://cdn.shopify.com/s/files/1/0462/0016/0409/files/plenty_of_room_at_the_bottom.pdf
    • https://cdn.shopify.com/s/files/1/0428/1267/0111/files/97459158559.pdf
    • https://cdn.shopify.com/s/files/1/0428/0628/0355/files/ebook_reader_fr_eigene_dateien.pdf
    • https://cdn.shopify.com/s/files/1/0433/6821/8780/files/zuxizajo.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_off00007cc8.bin
e5216be73b3f750424dec2c2c5196bbc5bf5e6438502efeff6683956a2b06741
pdf-font-stream PDF embedded font (sfnt) at offset 0x7CC8 5064 bytes
font_01_sfnt_off00008dfb.bin
862d7eba799d676576d1cafd9369d414e4d46f787ceda7fcae2cdcb1531a9c07
pdf-font-stream PDF embedded font (sfnt) at offset 0x8DFB 10896 bytes
font_02_sfnt_off0000b19c.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0xB19C 4324 bytes