Malicious PDF — malware analysis report

Static analysis result for SHA-256 5964867a98d07958…

MALICIOUS

PDF

42.2 KB Created: 2020-08-06 18:06:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 95b6ca0f7ba54e099fd865c216a90559 SHA-1: 096b7bc3c4a36423dec1c73069e79d05c9f5b32a SHA-256: 5964867a98d079581214ec1d66bfb4c566141951d3aaf145b71544a42629551a
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF file contains a link farm designed to redirect users to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM heuristics. The primary malicious URL identified is https://ttraff.ru/pify?keyword=como+sacar+mi+certificado+de+secundaria+en+pdf. The document body content, though partially obfuscated, also contains this URL, suggesting a lure to extract information or deliver further malware. No scripts were extracted from this sample.

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.ru/pify?keyword=como+sacar+mi+certificado+de+secundaria+en+pdf
    • http://files.benpaula.com/uploads/1/3/2/6/132695430/nidupidupuni.pdf
    • http://files.pqh.com/uploads/1/3/0/7/130739578/gelonavizutasam.pdf
    • http://files.joyfulbeginningsschool.org/uploads/1/3/0/7/130775987/lekukujeba_xijuxexupudu.pdf
    • http://files.spchevariecossette.info/uploads/1/3/0/8/130873958/depelavude-zovajojivasu.pdf
    • https://cdn.shopify.com/s/files/1/0430/7058/7029/files/fovobemivan.pdf
    • https://cdn.shopify.com/s/files/1/0435/0381/2773/files/jatikanesikibiz.pdf
    • https://cdn.shopify.com/s/files/1/0431/9287/7217/files/10758474094.pdf
    • https://cdn.shopify.com/s/files/1/0434/6331/1512/files/wezixomasepekax.pdf
    • https://cdn.shopify.com/s/files/1/0435/3651/5221/files/ccdc_22.pdf
    • https://cdn.shopify.com/s/files/1/0429/3961/3347/files/rowuzudisa.pdf
    • https://cdn.shopify.com/s/files/1/0435/3579/4327/files/44646807577.pdf
    • https://cdn.shopify.com/s/files/1/0428/9236/1887/files/save_gif_from_twitter.pdf
    • https://cdn.shopify.com/s/files/1/0431/7279/0432/files/53634042847.pdf
    • https://cdn.shopify.com/s/files/1/0429/3260/0985/files/xabejeza.pdf
    • https://cdn.shopify.com/s/files/1/0437/0500/8293/files/verenepaduse.pdf
    • https://cdn.shopify.com/s/files/1/0439/1242/9723/files/9299623133.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_off00006191.bin
b3b2b5a53d8cc09ccf797f2f4d7aa26ea0f3f40da12c55100593ae4f7e66ef0c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6191 5172 bytes
font_01_sfnt_off0000730f.bin
4c2f84a172c720480981549849f818c73b6eeff6b6716e590100bc2bf05e489e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x730F 11752 bytes

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