Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2fd311ba4bee276…

MALICIOUS

PDF

58.5 KB Created: 2020-08-11 05:33:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 81bdaafa1083fd012f8b0295795933d6 SHA-1: eec1cf171bac797de564c00db28cc8e1a0aed8ce SHA-256: e2fd311ba4bee2765cfa64b6e955fc298bc635b667f2cd6cae711637165a8e68
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a redirector service known to host malicious content. The primary heuristic firing indicates that the PDF links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL that triggered the heuristic, confirming the malicious redirection attempt.

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.ru/pify?keyword=astronomical+terms+pdf
    • http://files.ataraxiaphotography.com/uploads/1/3/1/4/131455883/jazozixure.pdf
    • http://files.lilyteng.com/uploads/1/3/0/7/130739043/foxifaritu-fugupepej.pdf
    • http://kunujir.revjeffmansfield.com/uploads/1/3/1/6/131606339/5779773cb688f3a.pdf
    • http://zoliti.ameliaandcompany.com/uploads/1/3/0/8/130814017/fuvopax-witeru.pdf
    • https://cdn.shopify.com/s/files/1/0432/4638/7367/files/marcelo_bielsa_tactics.pdf
    • https://cdn.shopify.com/s/files/1/0428/0333/1231/files/aqeedah_english.pdf
    • https://cdn.shopify.com/s/files/1/0434/7972/8281/files/xegojimaxene.pdf
    • https://cdn.shopify.com/s/files/1/0432/1561/8215/files/87724605138.pdf
    • https://cdn.shopify.com/s/files/1/0434/3041/2450/files/rekebowotalabarumebokon.pdf
    • https://cdn.shopify.com/s/files/1/0433/9643/2021/files/14316085750.pdf
    • https://cdn.shopify.com/s/files/1/0431/6623/6826/files/nakopokobijani.pdf
    • https://cdn.shopify.com/s/files/1/0430/9005/1221/files/49186743859.pdf
    • https://cdn.shopify.com/s/files/1/0435/8730/5629/files/98839891879.pdf
    • https://cdn.shopify.com/s/files/1/0431/1403/7397/files/conan_exiles_starter_guide.pdf
    • https://cdn.shopify.com/s/files/1/0438/3873/4496/files/xunawirelosowimepasupanu.pdf
    • https://cdn.shopify.com/s/files/1/0431/7793/5005/files/lakogeragisivufegapug.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_off0000a8e8.bin
f340742e3a8abfed438aebaf78ebaa1261bb2862e0649643edf650bb864c4809		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA8E8 5288 bytes
font_01_sfnt_off0000bac6.bin
e7f0ee44ee7e38238659f8a0bcc045b36b079e236b43af4de15d3da7082bf169		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBAC6 10008 bytes

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