Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5058197582a01dc…

MALICIOUS

PDF

40.6 KB Created: 2020-08-19 16:50:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c0c779167bf799aea03013f506ea5a85 SHA-1: a3c40d3d3c0ab217bf7844685166b946aceae8ff SHA-256: f5058197582a01dc3c1db2c1f05533a4eb422442e439a1a617835217af30d980
150 Risk Score

Malware Insights

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

The PDF contains a link farm designed to lure users with promises of movie downloads, ultimately redirecting to malicious infrastructure at ttraff.com. The ML classifier strongly indicated maliciousness, and the presence of numerous external links points to a SEO poisoning or link farm attack pattern. No scripts were extracted from this sample.

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=alien+vs+predator+full+movie++300mb
    • http://files.shipanna.com/uploads/1/3/1/8/131856212/77785.pdf
    • http://kurejab.leonardopallenberg.net/uploads/1/3/0/8/130814729/6579810.pdf
    • https://cdn.shopify.com/s/files/1/0433/3279/6574/files/65525239129.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/94323725826.pdf
    • https://cdn.shopify.com/s/files/1/0445/6588/9188/files/abbyy_to_word_converter_software_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/4027/6642/files/70798770.pdf
    • https://cdn.shopify.com/s/files/1/0431/7026/7291/files/telcordia_sr_332.pdf
    • https://cdn.shopify.com/s/files/1/0457/6690/1924/files/zijurenavufozedaserexuda.pdf
    • https://cdn.shopify.com/s/files/1/0435/4798/4027/files/the_bacchae_full_text.pdf
    • https://cdn.shopify.com/s/files/1/0436/0693/3661/files/tazavuritavovege.pdf
    • https://cdn.shopify.com/s/files/1/0436/4782/8133/files/reald_3d_vs_imax_3d.pdf
    • https://cdn.shopify.com/s/files/1/0430/2857/8467/files/art_of_seduction_robert_greene.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_off000060c6.bin
4bda4a8f915ae6e8a5c9e5cafc4c85c5fe0a87d1b762c7d1787ed5d1bb472b92		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60C6 5684 bytes
font_01_sfnt_off000073f6.bin
fb91711ed22c30589fbfe47b04e2af59bb2410960bb0cecbe7abcd058a95d9ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73F6 9968 bytes

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