Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea8826b409cae535…

MALICIOUS

PDF

41.7 KB Created: 2020-08-03 09:08:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5dcf1a82318c94930b11a0cc6e66b0a7 SHA-1: 890cce17daa6db9cf91942cdcac641c5d4ce4dea SHA-256: ea8826b409cae535080c1a7775a194eebece288863a565fe84f1c93646666a91
120 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'. The document body, though heavily obfuscated, contains text related to 'fifty shades of grey pdf download' and the malicious URL, suggesting a lure to a malicious site. The PDF also contains a large number of embedded links, many pointing to Shopify domains, which is indicative of a link farm used for SEO poisoning or distributing malicious content.

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=fifty+shades+of+grey+pdf+download
    • http://files.wahawkbands.com/uploads/1/3/0/7/130740217/memejov.pdf
    • http://files.carolinevanthoff.com/uploads/1/3/2/7/132741385/aacefb42a4.pdf
    • http://files.more-cb.com/uploads/1/3/1/4/131437484/galogi-fozubisomu-bolisuxumer-libasikibeva.pdf
    • https://cdn.shopify.com/s/files/1/0433/7667/2918/files/61204147852.pdf
    • https://cdn.shopify.com/s/files/1/0435/6436/8021/files/2381247489.pdf
    • https://cdn.shopify.com/s/files/1/0432/7754/9726/files/vituka.pdf
    • https://cdn.shopify.com/s/files/1/0431/3907/2161/files/43936434954.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/97072231683.pdf
    • https://cdn.shopify.com/s/files/1/0429/6749/8911/files/fijoge.pdf
    • https://cdn.shopify.com/s/files/1/0433/3332/0872/files/pipapin.pdf
    • https://cdn.shopify.com/s/files/1/0429/5157/3657/files/89561834731.pdf
    • https://cdn.shopify.com/s/files/1/0429/9309/0714/files/wibufimewe.pdf
    • https://cdn.shopify.com/s/files/1/0429/8987/9445/files/nuwevoko.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zutowujovepenatugipo.pdf
    • https://cdn.shopify.com/s/files/1/0430/1769/9477/files/48066003565.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_off000063d8.bin
66a88f8f30608202c97e6b42c1e389797d2fc319c8e4f61b6b82720ea1e6c07c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63D8 5452 bytes
font_01_sfnt_off00007684.bin
dbeb9ec8f0c16e6b4ea60fc37b08d1977c061266c0f18a7c4a8d3451bdaa98a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7684 10404 bytes

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