Malicious PDF — malware analysis report

Static analysis result for SHA-256 a63e8cb7f9b90a44…

MALICIOUS

PDF

49.7 KB Created: 2020-08-28 15:58:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7292b92956f64ac0929b04d180746dd6 SHA-1: 7454c9e73363e8a557fbd8419464e9cb20572d53 SHA-256: a63e8cb7f9b90a44a161f068d4ee3e69946e021d2f2b44d87e4a5e40c44183c0
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.club/pify?keyword=guia+de+los+movimientos+de+musculaci'. The document body, though partially garbled, also contains this URL and appears to be a lure related to 'Guia de los movimientos de musculaci'. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many of which are hosted on Shopify but some point to potentially malicious domains. The primary intent appears to be redirecting the user to malicious infrastructure.

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.club/pify?keyword=guia+de+los+movimientos+de+musculaci
    • http://puduwu.guamtattooist.com/uploads/1/3/0/7/130775997/xadejitavedir.pdf
    • http://files.itsavillagefoundation.com/uploads/1/3/1/4/131406751/lovebaju-piwukivug-mowowulawofam.pdf
    • http://files.creativedatainc.com/uploads/1/3/2/7/132741397/47ab34baff.pdf
    • http://nusovuza.weatherpaige.com/uploads/1/3/1/1/131163774/tufexi_lekifewukele.pdf
    • https://cdn.shopify.com/s/files/1/0433/6726/8517/files/69617944952.pdf
    • https://cdn.shopify.com/s/files/1/0432/1676/5087/files/abbyy_transformer_3._0_serial_key_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/0926/1218/files/vuguxeduwobamalagumurewe.pdf
    • https://cdn.shopify.com/s/files/1/0432/1411/0880/files/zetuk.pdf
    • https://cdn.shopify.com/s/files/1/0433/7595/2030/files/mayan_dresden_codex.pdf
    • https://cdn.shopify.com/s/files/1/0428/5490/8071/files/72205311852.pdf
    • https://cdn.shopify.com/s/files/1/0433/9980/7126/files/72025622123.pdf
    • https://cdn.shopify.com/s/files/1/0430/0242/9593/files/gatemupedukirudinimabeke.pdf
    • https://cdn.shopify.com/s/files/1/0440/9065/4885/files/alimentacion_balanceada_minsa.pdf
    • https://cdn.shopify.com/s/files/1/0435/2750/4024/files/zixaxigibaxotinifupademod.pdf
    • https://cdn.shopify.com/s/files/1/0434/1094/8254/files/executive_summary_template_docx.pdf
    • https://cdn.shopify.com/s/files/1/0431/4405/2885/files/20697468892.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
stream_003_off00006dda.bin
d960703b8f87ebcd8f6b627fba7f85e7343142b3600907ca676297965b9c5da6
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x6DDA 5612 bytes
font_01_sfnt_off00008122.bin
ad3bc1eed38b3392d4ba5da4a765bf84ff84148391069f7c45f386cc39ac439d
pdf-font-stream PDF embedded font (sfnt) at offset 0x8122 5080 bytes
font_02_sfnt_off0000925f.bin
978ffb6a1914f4a1f8eb9ca62b886e6bce7355ca52dc0518978b8ed5f3b09b31
pdf-font-stream PDF embedded font (sfnt) at offset 0x925F 11436 bytes