Malicious PDF — malware analysis report

Static analysis result for SHA-256 e34955005483b9c1…

MALICIOUS

PDF

43.1 KB Created: 2020-08-18 13:55:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a762dc9029c1b5a867777ecd5da2cc06 SHA-1: b173e560cf81f04d182c6fc8370a57dc6c457f61 SHA-256: e34955005483b9c1c155e0948a0a3cb6fd55dadf5648a227808de60be7f95cae
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, identified as a link farm, with a primary malicious redirector pointing to 'ttraff.com'. This suggests the document's purpose is to lure users to malicious infrastructure, likely for SEO poisoning or to distribute further payloads. The ML classifier strongly supports the malicious nature of this PDF.

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=lazard+lcoe+report+2019
    • http://files.capturedgravityphotography.com/uploads/1/3/0/9/130969588/4367745.pdf
    • http://files.helenokey.com/uploads/1/3/2/6/132683014/kezirivalelolirogef.pdf
    • http://files.maggiehairston.com/uploads/1/3/1/4/131438079/910ae.pdf
    • http://tizubifox.memoriesofvignacourt.com/uploads/1/3/2/6/132681556/6420979.pdf
    • http://files.flowergirlnaturals.com/uploads/1/3/1/8/131856646/1330883.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/41877136991.pdf
    • https://cdn.shopify.com/s/files/1/0430/9195/1769/files/mifito.pdf
    • https://cdn.shopify.com/s/files/1/0437/7955/5486/files/fomaru.pdf
    • https://cdn.shopify.com/s/files/1/0432/6473/7448/files/asm_fm_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/5857/7051/files/what_is_an_example_of_a_conglomerate.pdf
    • https://cdn.shopify.com/s/files/1/0431/1266/1152/files/wifusalaraba.pdf
    • https://cdn.shopify.com/s/files/1/0434/5289/1297/files/89672314345.pdf
    • https://cdn.shopify.com/s/files/1/0434/2503/8497/files/puvikonol.pdf
    • https://cdn.shopify.com/s/files/1/0431/6105/9482/files/47591336416.pdf
    • https://cdn.shopify.com/s/files/1/0430/6888/3106/files/51609522406.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_off00006795.bin
559bc63366471446d810d6ea8e1698b5746d214859758b9cc6ff2076b10ca27d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6795 5360 bytes
font_01_sfnt_off000079e5.bin
fd820b5aec39750e1fc5339d5a5dfaebae0ab0a699fd695c19172e46c7ee4cef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79E5 10992 bytes

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