Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa568d508293d2da…

MALICIOUS

PDF

40.9 KB Created: 2020-08-22 12:53:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ba30c75450116a4bf52054e7dfa7d2a7 SHA-1: cd36ed5273d36281e96c9e7e588544c8c6b30da3 SHA-256: aa568d508293d2da8ad56400ac23f89cde30dd61d8c0dee7cb2a7bd9808d7f34
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it's a malicious redirector, pointing to 'https://ttraff.com/pify?keyword=aarti+songs++telugu'. This URL is likely used to lure users into a phishing or malware distribution scheme. The document body, though heavily obfuscated, contains the same redirect URL and a large number of links to other PDFs hosted on Shopify and other domains, suggesting a link farm for SEO poisoning or traffic redirection.

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=aarti+songs++telugu
    • http://files.pamsteashoppe.com/uploads/1/3/1/3/131384789/59b03f6f49c09c.pdf
    • http://vagewis.bluewaterfmchurch.com/uploads/1/3/1/0/131070109/9050662.pdf
    • http://files.acornabilityclinic.com/uploads/1/3/0/7/130739204/jowubebaf.pdf
    • http://files.biohaircarethailand.com/uploads/1/3/1/4/131452935/42623e.pdf
    • http://files.legato.ca/uploads/1/3/0/8/130874317/tizolepumafo.pdf
    • https://cdn.shopify.com/s/files/1/0432/8790/4411/files/pikabonobubuwirap.pdf
    • https://cdn.shopify.com/s/files/1/0438/4319/0946/files/tumoxuli.pdf
    • https://cdn.shopify.com/s/files/1/0428/7463/4403/files/27401354336.pdf
    • https://cdn.shopify.com/s/files/1/0433/6808/7717/files/bobimes.pdf
    • https://cdn.shopify.com/s/files/1/0430/1648/7065/files/62888782045.pdf
    • https://cdn.shopify.com/s/files/1/0436/9419/4843/files/zanegotemububerelizetuji.pdf
    • https://cdn.shopify.com/s/files/1/0438/1822/1730/files/gst_full_information_in_marathi.pdf
    • https://cdn.shopify.com/s/files/1/0432/8806/8254/files/saliso.pdf
    • https://cdn.shopify.com/s/files/1/0433/5940/4191/files/71889228536.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_off000056b0.bin
680d871849919494cf5c9160c0324a789ec55ca8487c11e3c36360ac6fce4b82		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56B0 4724 bytes
font_01_sfnt_off000066c9.bin
f9da4f0107ab8b994e6e981a8ac666bcd14a84f128e9a3d23b508dec7aa3215b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66C9 10016 bytes
font_02_sfnt_off00008924.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8924 4324 bytes

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