Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6379cda82c1eaf4…

MALICIOUS

PDF

50.0 KB Created: 2020-08-20 12:12:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a2400844e0e54c13f7227c57beb54ea9 SHA-1: 39b62b0f67f5b8a6cdc49083e7bca7dc87af52ee SHA-256: c6379cda82c1eaf458876d1cd3379303202c72a3e9e74d36b92be935550787a7
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, also contains this URL and numerous other links hosted on Shopify and other domains, indicative of a link farm. The primary attack pattern involves tricking the user into clicking the malicious link, likely leading to a phishing or malware download site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=civilization+revolution+2+achievement+guide
    • http://files.auroragemboutique.com/uploads/1/3/1/6/131606349/gituronitukipu-zuwusosejafiruj.pdf
    • http://zurasefi.gabrielaalbanhidalgo.com/uploads/1/3/0/7/130775654/7d5f3aee.pdf
    • https://cdn.shopify.com/s/files/1/0431/1311/9905/files/muromilewaxopapabarusujup.pdf
    • https://cdn.shopify.com/s/files/1/0437/1028/3931/files/zefulexetipod.pdf
    • https://cdn.shopify.com/s/files/1/0435/5656/9249/files/75874359295.pdf
    • https://cdn.shopify.com/s/files/1/0435/1174/2628/files/shield_enchantments_minecraft.pdf
    • https://cdn.shopify.com/s/files/1/0434/1619/1138/files/xifepavudekevibezinavu.pdf
    • https://cdn.shopify.com/s/files/1/0431/8606/1463/files/andragogy_books.pdf
    • https://cdn.shopify.com/s/files/1/0432/6886/6214/files/tugigefelojuxeti.pdf
    • https://cdn.shopify.com/s/files/1/0435/5715/9063/files/lazekaridefu.pdf
    • https://cdn.shopify.com/s/files/1/0432/8698/6908/files/3475621545.pdf
    • https://cdn.shopify.com/s/files/1/0433/8394/7414/files/46428688002.pdf
    • https://cdn.shopify.com/s/files/1/0438/2552/8989/files/kosurofagilowakozujiwexo.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_off000085db.bin
b17c9e0de00c44d1d2d319ef6bb03d982e404b95766d6261d18382d9d72bde1b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85DB 5324 bytes
font_01_sfnt_off000097ce.bin
6a0ae9809bcabf72e4c6729b28a2868283c689f10fff1fa45edb38e45227a1e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x97CE 10360 bytes

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