Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec94e2a1de79ee6e…

MALICIOUS

PDF

44.5 KB Created: 2020-08-01 10:18:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5f4cae1c5c57696efcf529847fe0fb5c SHA-1: f57841c43baf6deb4b48237e5208304253ca1a55 SHA-256: ec94e2a1de79ee6e7d68c85b5fb3c39711487687f0461f5119e34eec34294533
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating that it directs users to malicious infrastructure. The document body, though heavily obfuscated, contains the text "Burn iso to usb mac" and the malicious URL https://ttraff.ru/pify?keyword=burn+iso+to+usb+mac. This suggests a social engineering attack aiming to trick users into visiting a malicious site by posing as a search result. The PDF_SEO_LINK_FARM heuristic further supports this by showing a large number of external links, likely for SEO manipulation or to host further malicious content.

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=burn+iso+to+usb+mac
    • http://files.piecedoccasion.net/uploads/1/3/0/8/130814397/vokavexofuxidazul.pdf
    • http://files.liliyaphoto.com/uploads/1/3/1/4/131453527/sigosevavexugagu.pdf
    • http://files.landslidetechnology.com/uploads/1/3/0/8/130874489/7f58628c5c.pdf
    • https://cdn.shopify.com/s/files/1/0435/0207/6070/files/cape_girardeau_mo_form_topix.pdf
    • https://cdn.shopify.com/s/files/1/0431/1855/9389/files/61340367131.pdf
    • https://cdn.shopify.com/s/files/1/0431/6341/8784/files/taronitipa.pdf
    • https://cdn.shopify.com/s/files/1/0440/3481/8198/files/58390013819.pdf
    • https://cdn.shopify.com/s/files/1/0440/0968/5157/files/96556782895.pdf
    • https://cdn.shopify.com/s/files/1/0434/5430/0312/files/nepubasavojed.pdf
    • https://cdn.shopify.com/s/files/1/0428/6038/0327/files/munewuvogelow.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mudamizoxudaxusuzo.pdf
    • https://cdn.shopify.com/s/files/1/0433/3623/7206/files/rutuxozizog.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
font_00_sfnt_off00005ba4.bin
7c75262b6382606eae31f201c0c14a5e5edd06722c75c869786bdae40ff6c6df		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BA4 5104 bytes
font_01_sfnt_off00006ce2.bin
22cf9bbb7355b895cdf634f426fbc957ce82c31e9dbeb390477c5aa4b4f9d981		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CE2 10336 bytes
font_02_sfnt_off0000907c.bin
c0a2658b41d639f606eba7091e87e8bd42a81d8ac063310e149400b84daa429e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x907C 16092 bytes

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