Malicious PDF — malware analysis report

Static analysis result for SHA-256 8106f0d43653d186…

MALICIOUS

PDF

42.2 KB Created: 2020-08-24 17:11:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c12b6ef7be56b05ac69921af9a3cbb6b SHA-1: ab27770caf83ef0b5f6093f2caa2006874a8c8e9 SHA-256: 8106f0d43653d186b62854e0f3d0a6ff8faefeef3d3dbe152f95474e5f41e7e2
150 Risk Score

Malware Insights

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

The PDF contains a lure for a Netflix mod apk, which is a common theme for phishing and malware delivery. It embeds numerous links, with one critical heuristic firing indicating a redirector to malicious infrastructure at 'ttraff.com'. The ML classifier also strongly flagged this PDF as malicious. The document body, though partially corrupted, contains the same lure and the malicious URL, confirming the intent to redirect users to potentially harmful content.

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=netflix+mod+apk++for+android
    • http://tupez.diamondhomes.net/uploads/1/3/1/3/131384609/3380089.pdf
    • http://files.acuyoganw.com/uploads/1/3/0/9/130969190/buxozuwazajemiro.pdf
    • http://files.kaitlinrphotography.com/uploads/1/3/0/7/130775518/bc4063.pdf
    • https://cdn.shopify.com/s/files/1/0439/1564/1000/files/40935938931.pdf
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/96718836358.pdf
    • https://cdn.shopify.com/s/files/1/0440/5533/0981/files/personal_statement_for_scholarship_sample.pdf
    • https://cdn.shopify.com/s/files/1/0432/4474/8950/files/ravexaxotez.pdf
    • https://cdn.shopify.com/s/files/1/0429/6107/6375/files/jetivugavas.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zikoraj.pdf
    • https://cdn.shopify.com/s/files/1/0432/3888/3485/files/judefapujo.pdf
    • https://cdn.shopify.com/s/files/1/0428/5431/8239/files/ebook_metabolisme_karbohidrat.pdf
    • https://cdn.shopify.com/s/files/1/0438/0806/3649/files/meranemila.pdf
    • https://cdn.shopify.com/s/files/1/0434/7641/8720/files/guia_ada_2020_espaol_completo.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_off000061ce.bin
b2e3813677076d1bd7c5bd1580c4c217f21b269cd1f4930cd30cd1ac393c0835		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61CE 5108 bytes
font_01_sfnt_off00007327.bin
d5a88a9797dc5b3770343c2417c4927c5ae559679b7c3bc939ddc68d7ac47af7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7327 15492 bytes

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