Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff1210fd43065287…

MALICIOUS

PDF

44.0 KB Created: 2020-08-19 11:41:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 486913735fee28d048e7123c7b95f5a0 SHA-1: 9f7a7b29fbb4d69ed5bdba7b7246a4cacdd1813c SHA-256: ff1210fd430652872b285b98bb308d85da5a978ffbc8a191fb6444937c8b7206
120 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a known malicious domain, ttraff.com, disguised with a lure related to Excel functions. The document body, though heavily obfuscated, contains the same URL and a reference to "wkhtmltopdf", suggesting it was generated by a tool. The presence of multiple external links, many pointing to Shopify domains, indicates a link farm or redirection strategy. The primary malicious IOC is the redirector URL.

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=excel+vlookup+function+examples+pdf
    • http://files.rma-amr.ca/uploads/1/3/0/7/130739265/9032019.pdf
    • http://files.carolinagreenindustrynetwork.com/uploads/1/3/1/6/131606487/1731aa872b4ad.pdf
    • https://cdn.shopify.com/s/files/1/0439/4126/5566/files/14352275545.pdf
    • https://cdn.shopify.com/s/files/1/0429/9830/0823/files/inuyasha_season_3.pdf
    • https://cdn.shopify.com/s/files/1/0434/0957/1990/files/jiwirezavomulej.pdf
    • https://cdn.shopify.com/s/files/1/0436/6467/0873/files/fermentation_lab_worksheet_answers.pdf
    • https://cdn.shopify.com/s/files/1/0466/3469/6869/files/af_form_4005.pdf
    • https://cdn.shopify.com/s/files/1/0432/6323/0116/files/factorio_red_science_blueprint.pdf
    • https://cdn.shopify.com/s/files/1/0429/7677/2250/files/alphabetical_series_reasoning_questions.pdf
    • https://cdn.shopify.com/s/files/1/0429/0691/0887/files/64813116231.pdf
    • https://cdn.shopify.com/s/files/1/0432/8305/4757/files/dajofumadolujow.pdf
    • https://cdn.shopify.com/s/files/1/0428/7057/1174/files/25986752249.pdf
    • https://cdn.shopify.com/s/files/1/0428/3406/7615/files/balewubufosifibesi.pdf
    • https://cdn.shopify.com/s/files/1/0435/4372/4186/files/19205064926.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fapodepemiretewuroraga.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kawovuk.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_off00006d05.bin
02c93bb0839a32d05ae6ef419bd05f63ac7d670d010de13004a476ffda8882c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D05 5352 bytes
font_01_sfnt_off00007f36.bin
0fb99ac8f7bca71d6bf3f7a98af369518d63ae2bdfd8baf18eee4c40e6ee00f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F36 10420 bytes

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