Malicious PDF — malware analysis report

Static analysis result for SHA-256 56f8e2849ea47a24…

MALICIOUS

PDF

41.5 KB Created: 2020-08-06 06:42:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bc1f2de1f93495d01f901a9688c69c5e SHA-1: fa0930b1ba1f6586cc28b3fcb970c92a0c0d2ebb SHA-256: 56f8e2849ea47a241cb3feed050bffa594f39a35c927c1826bce04d658aa0983
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. This URL is presented within the document body, disguised as a link to a dictionary PDF. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to Shopify domains, likely for SEO manipulation or to obscure the malicious redirector. The primary malicious URL is 'https://ttraff.com/pify?keyword=concise+oxford+dictionary+of+english+etymology+pdf'.

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=concise+oxford+dictionary+of+english+etymology+pdf
    • http://files.sydneynewhorizons.org/uploads/1/3/1/3/131381605/mafajepumipuzegazasi.pdf
    • http://files.dancingsharkstudio.com/uploads/1/3/1/0/131070178/figox-zolozoxukuz-ligovafitalu-desik.pdf
    • http://files.lubriq.dk/uploads/1/3/2/7/132710678/1400198.pdf
    • http://files.nalcbranch489.com/uploads/1/3/1/3/131379236/xamapolipokazuf.pdf
    • http://files.intriguetheband.co.uk/uploads/1/3/1/4/131453250/4f5b90a61d2fe99.pdf
    • https://cdn.shopify.com/s/files/1/0429/9934/9407/files/architecture_business_plan.pdf
    • https://cdn.shopify.com/s/files/1/0428/6549/2127/files/vovukiwaregexewago.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/99914628395.pdf
    • https://cdn.shopify.com/s/files/1/0430/6694/9786/files/93537643690.pdf
    • https://cdn.shopify.com/s/files/1/0437/5507/7786/files/mcdonald_s_menu_with_prices_sa.pdf
    • https://cdn.shopify.com/s/files/1/0431/0581/2629/files/99045405815.pdf
    • https://cdn.shopify.com/s/files/1/0433/3810/5000/files/10768259194.pdf
    • https://cdn.shopify.com/s/files/1/0431/7885/2507/files/sodipatow.pdf
    • https://cdn.shopify.com/s/files/1/0430/6393/5129/files/anatomy_of_maxillary_sinus.pdf
    • https://cdn.shopify.com/s/files/1/0433/6284/4837/files/diablo_2_sorceress_build.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zonixalekena.pdf
    • https://cdn.shopify.com/s/files/1/0429/6730/2303/files/intravenous_anaesthetic_agents.pdf
    • https://cdn.shopify.com/s/files/1/0434/3411/5233/files/bodatokoxop.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/
    • https://cdn.shopify.com/s/files/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000054a2.bin
47a27becf7e12ded1e56f074d4fbe36ddbb15f3cd236e9640e8f8dc1d594c67c
pdf-font-stream PDF embedded font (sfnt) at offset 0x54A2 5548 bytes
font_01_sfnt_off0000675c.bin
ce719f0f587417adef0155c6f01e485a39c89f6fe2db77e644a9300841a9fe1d
pdf-font-stream PDF embedded font (sfnt) at offset 0x675C 10292 bytes
font_02_sfnt_off00008a78.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0x8A78 4324 bytes