Malicious PDF — malware analysis report

Static analysis result for SHA-256 567f7cf9fb70420d…

MALICIOUS

PDF

40.6 KB Created: 2020-04-11 05:49:42 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 37f2702a51b63832804105945e5a5019 SHA-1: 05c00224b995d3afc97f0ac61d3df10bfa84d2db SHA-256: 567f7cf9fb70420da1828c34443a5669b1df848f9519c588261729a8d9a39eed
70 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which point to other PDF files hosted on various domains. This indicates a link farm designed to distribute malicious content. The document body, though partially corrupted, contains a URL that appears to be a lure for educational material, likely to trick users into clicking the embedded malicious links.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://74-123-78-154.mgwnet.com/uploads/1/3/0/6/130640141/130640141.html#saunders+comprehensive+review+for+the+nclex-pn+examination+test+bank
    • http://everythingwireless.ca/uploads/1/3/0/8/130873880/kabuwagugiwe.pdf
    • http://cohesif.net/uploads/1/3/0/8/130814286/xogilafoje.pdf
    • http://liveloveandfaith.org/uploads/1/3/0/6/130639910/08b95cf5749f.pdf
    • http://buttonhookshop.com/uploads/1/3/0/6/130639926/dafanewesawinilezage.pdf
    • http://nateflipkinowski.com/uploads/1/3/0/2/130287310/vowiseb.pdf
    • http://blingafied.com/uploads/1/3/1/4/131438419/133534.pdf
    • http://cpsplantscapes.com/uploads/1/3/0/2/130270781/fakiralizudiri_fajedenorero.pdf
    • http://darasyrkin.net/uploads/1/3/1/4/131406826/jutuxevijerofap_menuj.pdf
    • http://androft.com/uploads/1/3/0/7/130738792/neroxakujo.pdf
    • http://hendersonhslibrary.com/uploads/1/3/1/4/131453544/4922607.pdf
    • http://hendersonhsl
    • 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_off00006b25.bin
d8b554f2070e7cf693c9a9fd9c36aaf3304e56b13ae3a078f2bacd51eeeda2b5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B25 8676 bytes
font_01_sfnt_off00008c67.bin
87fd6b1a35a64f5c2d30902eea89631a9c05d6b36ef70c6d0cee4d2ad867525e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C67 2596 bytes

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