Malicious PDF — malware analysis report

Static analysis result for SHA-256 caf72a5e2ed1655c…

MALICIOUS

PDF

39.7 KB Created: 2020-08-01 23:23:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9301ab2e3836fdd9b90341e8c98e7fc6 SHA-1: db7292857736c2dd2c4b85719387490cd0935066 SHA-256: caf72a5e2ed1655c38a191fb31a36d7fe748372f94843797cf5512c97ac60a29
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=png+2+pdf', suggesting a lure to a malicious site. The presence of a large number of external PDF links also indicates a link farm, likely for SEO poisoning or to obscure the true destination.

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=png+2+pdf
    • http://files.pvishnevetsky.com/uploads/1/3/0/9/130970022/098ff.pdf
    • http://files.thenamasteyogastudio.com/uploads/1/3/1/1/131163960/596379.pdf
    • http://files.stresscafe.com.au/uploads/1/3/2/6/132681164/4c0c2b2161022.pdf
    • https://cdn.shopify.com/s/files/1/0430/9496/6421/files/96637277589.pdf
    • https://cdn.shopify.com/s/files/1/0432/2767/6829/files/tikamigokoxerodazogusozuk.pdf
    • https://cdn.shopify.com/s/files/1/0431/3173/2122/files/10721190902.pdf
    • https://cdn.shopify.com/s/files/1/0438/3647/3501/files/21441454057.pdf
    • https://cdn.shopify.com/s/files/1/0431/6856/3351/files/43515192069.pdf
    • https://cdn.shopify.com/s/files/1/0440/3236/0613/files/lekikelejasuxije.pdf
    • https://cdn.shopify.com/s/files/1/0436/9950/3257/files/gegepiwawuzugavonu.pdf
    • https://cdn.shopify.com/s/files/1/0431/3173/2125/files/konimaz.pdf
    • https://cdn.shopify.com/s/files/1/0430/8847/8365/files/famuvibovefisutaredukoza.pdf
    • https://cdn.shopify.com/s/files/1/0433/6245/1611/files/2674067026.pdf
    • https://cdn.shopify.com/s/files/1/0431/3455/0177/files/desovepuwufuga.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lafiku.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_off00005e12.bin
ed8598cd8d772fb7bb3cc664d524ff73828359991528679a9e3fb944f23e5d12		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E12 4824 bytes
font_01_sfnt_off00006ea9.bin
e535c830e054233955770b40ad03502807b7d467c54e35b4313046d21e58e05c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EA9 10752 bytes

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