Malicious PDF — malware analysis report

Static analysis result for SHA-256 d558416da2068479…

MALICIOUS

PDF

43.6 KB Created: 2020-04-12 05:06:30 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 7f795e1962d9edf6a1807d2b69018ebb SHA-1: 5db89cb7cd623296c8d16494bead164152129cba SHA-256: d558416da2068479aacc38d2f201483db9e2ac535c4eae4761cd0067c585022d
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of external links, a technique often used for SEO poisoning or to redirect users to malicious sites. The document body, though heavily obfuscated, contains references to 'Triple yahtzee score cards free' and the wkhtmltopdf application, suggesting a lure to attract clicks. The heuristic 'PDF_SEO_LINK_FARM' confirms the presence of a mass external link farm, with the dominant host being 't24player.live'. No scripts were extracted from this sample.

Heuristics 3

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://legaldocmasters.com/uploads/1/3/0/4/130435573/130435573.html#triple+yahtzee+score+cards+free
    • http://t24player.live/uploads/1/3/1/4/131438539/wusinugoropiwav.pdf
    • http://cbmdhomesolutions.com/uploads/1/3/1/1/131163896/butib_vusidimolur_rojugubif.pdf
    • http://mrproano.org/uploads/1/3/0/5/130589400/9697294.pdf
    • http://proview-s3.com/uploads/1/3/0/7/130739893/3530938.pdf
    • http://joanfaubertsuttle.com/uploads/1/3/0/5/130550846/2241557.pdf
    • http://losachicboutique.ca/uploads/1/3/1/4/131453780/7965a.pdf
    • http://myrenovapainting.com/uploads/1/3/0/7/130739185/3240156.pdf
    • http://beautybodybodycontouringandsculpting.com/uploads/1/3/0/7/130739024/tukated-tinofivobak-penezobedek.pdf
    • http://frybreadheaven.com/uploads/1/3/1/0/131070883/ed0ab1771fe.pdf
    • http://accessoriessonecessary.com/uploads/1/3/0/3/130313145/razajemikupeze.pdf
    • http://casecatalysttraining.org/uploads/1/3/0/4/130477007/7388122.pdf
    • http://allydistefano.me/uploads/1/3/1/4/131407492/8821824.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/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000850c.bin
baa5b61964f7c0a1363dfc3849511d729fd5ce7a2b42288909c82b6e31578ff2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x850C 7616 bytes

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