Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc19a61c4fb71e40…

MALICIOUS

PDF

46.8 KB Created: 2020-07-31 15:23:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: be422346e69cf2c4730034dffb9245cc SHA-1: ee5200935016c343bb3e3be5130ca5ed174e9923 SHA-256: fc19a61c4fb71e409ffe34be446ef10c23ec7ea1e1e7f86a211e0445a81d94d0
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on Shopify. The document body, though heavily obfuscated, contains text related to 'watch hunger games free', reinforcing the lure. The ML classifier also strongly flagged this PDF as malicious.

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=watch+hunger+games+free
    • http://files.daybydayph.com/uploads/1/3/0/7/130775934/guwugepenareni.pdf
    • http://files.anthonyweitz.com/uploads/1/3/1/3/131379801/xuwodawi.pdf
    • http://files.luvafrenchbulldog.com/uploads/1/3/1/6/131636654/vijiguteminezosisil.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sejil.pdf
    • https://cdn.shopify.com/s/files/1/0428/3649/2444/files/40442814506.pdf
    • https://cdn.shopify.com/s/files/1/0433/9322/0758/files/wedupatinebonapovajub.pdf
    • https://cdn.shopify.com/s/files/1/0430/7379/8306/files/xalodevowufafunarad.pdf
    • https://cdn.shopify.com/s/files/1/0435/7164/2527/files/33966358185.pdf
    • https://cdn.shopify.com/s/files/1/0428/4832/1692/files/rapivasozujeji.pdf
    • https://cdn.shopify.com/s/files/1/0428/1014/6983/files/gepadeferesezadisi.pdf
    • https://cdn.shopify.com/s/files/1/0432/0637/7633/files/75797265460.pdf
    • https://cdn.shopify.com/s/files/1/0428/3806/5308/files/57452132126.pdf
    • https://cdn.shopify.com/s/files/1/0430/5115/5618/files/bonoxubijitun.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_off00007ac4.bin
afd5b536cd9fb1c22e44f02f7f058bbbf38b947e2409d4c392b38f3da93a42e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AC4 5000 bytes
font_01_sfnt_off00008b98.bin
e381f7155d26153f9d0f6eef4f2f1c2f1670b724464c115b47b9c068943346ec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B98 10156 bytes

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