Malicious PDF — malware analysis report

Static analysis result for SHA-256 16e5add134a7a64d…

MALICIOUS

PDF

31.4 KB Created: 2018-06-11 09:42:44 -04:00 Authoring application: wkhtmltopdf 0.12.4 (via Qt 4.8.7)
MD5: f544082848522077cf55544e35f9a1de SHA-1: 926fc91a2d6f0cd8a99119ed8ef02038ffc9d4db SHA-256: 16e5add134a7a64d64495ad631d97bae783363c8235c3572e7767cfd9025a580
102 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it is a fake download lure, specifically using SEO poisoning tactics. The document body and extracted URLs point to a domain designed to trick users into downloading a file disguised as "The Red Hot Chili Peppers An Oral Visual History". The primary malicious URLs are associated with this fake download attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9515

Heuristics 4

  • Fake 'free download' SEO-poisoning PDF critical PDF_SEO_FAKE_DOWNLOAD
    The ML classifier flagged this PDF AND it carries a visual download/call-to-action lure AND an off-domain server-side download-gateway link whose query string names a document payload. This three-signal conjunction is the fake-document / 'free PDF download' SEO-poisoning delivery pattern: the page is padded with benign decoy links to dilute classifier scores while funnelling the victim through the gateway to malware/scareware. Acting only on the conjunction keeps benign download-bearing PDFs from being misflagged.
  • 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://uncpbisdegree.com/download3.php?q=the-red-hot-chili-peppers-an-oral-visual-history.pdf
    • http://uncpbisdegree.com/download4.php?q=the-red-hot-chili-peppers-an-oral-visual-history.pdf
    • http://www.texarkanagazette.com/
    • https://www.wheeloffortunecheats.com/thing/3-words/
    • http://www.mejortorrent.com/descargar-Videoclip.html
    • http://riverside-resort.net/1/suntrust-bank-auto-loan.pdf
    • http://riverside-resort.net/1/tap-out.pdf
    • http://riverside-resort.net/1/strictly-bondage.pdf
    • http://riverside-resort.net/1/six-minute-solutions-for-civil-pe-exam-construction.pdf
    • http://riverside-resort.net/1/training-guide-70-461.pdf
    • http://riverside-resort.net/1/stihl-ms290-chainsaw-parts-manual.pdf
    • http://riverside-resort.net/1/suzuki-gti-australia-facebook.pdf
    • http://riverside-resort.net/1/the-next-america-boomers-millennials-and-looming-generational-showdown-paul-taylor.pdf
    • http://riverside-resort.net/1/textbook-of-transpersonal-psychiatry-and-psychology.pdf
    • http://riverside-resort.net/1/the-seven-steps-to-closure-kindle-edition-donna-joy-usher.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://en.wikipedia.org/wiki/Red_Hot_Chili_Peppers
    • https://en.wikipedia.org/wiki/Greatest_Hits_%28Red_Hot_Chili_Peppers_album%29
    • https://fi.wikipedia.org/wiki/Red_Hot_Chili_Peppers
    • https://fr.wikipedia.org/wiki/Anthony_Kiedis
    • http://www.microsofttranslator.com/bv.aspx?ref=SERP&br=ro&mkt=en-US&dl=en&lp=FR_EN&a=https%3a%2f%2ffr.wikipedia.org%2fwiki%2fAnthony_Kiedis
    • http://www.mtv.com/music
    • https://www.youtube.com/results
    • https://www.psychologytoday.com/us/blog/inside-the-box/201402/thinking-outside-the-box-misguided-idea
    • http://blogs.discovermagazine.com/discoblog/2011/01/21/ncbi-rofl-apparently-women-but-not-men-like-monkey-sex-literally/
    • https://nutritionfacts.org/video/turmeric-curcumin-plants-vs-pills/
    • http://go.microsoft.com/fwlink/?LinkID=617350
    • http://go.microsoft.com/fwlink/?LinkId=521839&CLCID=0409
    • http://go.microsoft.com/fwlink/?LinkID=246338&CLCID=0409
    • https://go.microsoft.com/fwlink/?linkid=868922
    • http://go.microsoft.com/fwlink/?LinkID=286759&CLCID=409
    • http://go.microsoft.com/fwlink/?LinkID=617297
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicense

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003fac.bin
1539045d609e6519ff5420d82b34f1325a06afd0be88215ecc9a4a9d67bb942b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3FAC 10604 bytes
font_01_sfnt_off00006161.bin
2101d3055e269996c571453c08677d77a04f73b0af50b16f47d4bb4493f2e578		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6161 6852 bytes

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