Malicious PDF — malware analysis report

Static analysis result for SHA-256 86019d91993c7f7f…

MALICIOUS

PDF

35.8 KB Created: 2020-08-20 02:32:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 59f19c2f05fbf308ad5f98a6b3a08039 SHA-1: a7cc2f8a3d13084ab57ad2c6d627a41e39de7991 SHA-256: 86019d91993c7f7fb5d4eacb1ff78f8d18f26f6def1fec25ac4c62bd921e5adb
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to the presence of a critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it points to known malicious infrastructure. Additionally, the PDF_SEO_LINK_FARM heuristic fired, revealing a large number of external links, many hosted on Shopify. The primary malicious URL identified is https://ttraff.cc/pify?keyword=blue+anodized+aluminum+sheet. The document body contains garbled text but includes the same URLs found in the heuristics and URL extraction.

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.cc/pify?keyword=blue+anodized+aluminum+sheet
    • http://kugexafot.todaysteachingtools.com/uploads/1/3/2/6/132681670/6440478.pdf
    • http://files.cartergilmorecollection.com/uploads/1/3/0/7/130775565/830250a20a79.pdf
    • http://figimuxep.sunsetskinboutique.com/uploads/1/3/1/4/131454215/nazile.pdf
    • http://files.90tenathletics.com/uploads/1/3/0/9/130969372/rujodado.pdf
    • http://files.nmensemble.com/uploads/1/3/0/8/130813736/9239468.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/42539854631.pdf
    • https://cdn.shopify.com/s/files/1/0429/2627/6771/files/fijipo.pdf
    • https://cdn.shopify.com/s/files/1/0437/8725/5970/files/beamforming_antenna_basics.pdf
    • https://cdn.shopify.com/s/files/1/0438/1986/0125/files/43978780259.pdf
    • https://cdn.shopify.com/s/files/1/0438/9571/8040/files/sexifejelulogovisimopex.pdf
    • https://cdn.shopify.com/s/files/1/0430/6495/0945/files/dotolad.pdf
    • https://cdn.shopify.com/s/files/1/0433/7532/9441/files/pip_install_matplotlib.pdf
    • https://cdn.shopify.com/s/files/1/0435/1941/0328/files/anorrectoplastia_sagital_posterior.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/71062637782.pdf
    • https://cdn.shopify.com/s/files/1/0435/4139/7656/files/raduvegonogimuvow.pdf
    • https://cdn.shopify.com/s/files/1/0436/3301/6982/files/robotics_books_free_download.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_off00004e2e.bin
f49bd2de0cbe100ddc6e0ea3a7a9824bc24e2be44e40e50165b6a882f2082ce1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E2E 5068 bytes
font_01_sfnt_off00005f49.bin
5c2e68e55e033f82c985b58748bf3df6b16b0e243223fd93a1bfec42dc8f0907		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F49 10280 bytes

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