Malicious PDF — malware analysis report

Static analysis result for SHA-256 049ded9ddba8ea44…

MALICIOUS

PDF

35.5 KB Created: 2018-06-11 09:58:20 -04:00 Authoring application: wkhtmltopdf 0.12.4 (via Qt 4.8.7)
MD5: df1dd0f58f69f6873dcd7bab76f2f137 SHA-1: 8fe5a84ac0337e8555b7de812d86bd60775d151a SHA-256: 049ded9ddba8ea44359e4174bc5626fe40964fe8f84f346116e344a5dfc0443e
102 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and contains heuristics indicating it is a fake download lure. The document body and embedded URLs point to a domain designed to trick users into downloading a file, likely a malicious payload. The primary malicious URL is http://uncpbisdegree.com/download3.php?q=spice-chemistry-second-edition-solutions-manual.pdf.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9062

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=spice-chemistry-second-edition-solutions-manual.pdf
    • http://uncpbisdegree.com/download4.php?q=spice-chemistry-second-edition-solutions-manual.pdf
    • http://www.bibme.org/
    • http://www.101science.com/radiopage2.htm
    • http://www.101science.com/eleclinks.htm
    • http://www.incorcg.com.br/
    • http://aciar.gov.au/publicationbysubject-all
    • http://torrentz.eu/search.html
    • http://www.emballagedigest.fr/blog.php?q=packaging
    • http://www.epanorama.net/links/basics.html
    • http://antiagingskincaretipsi.com/best-korean-skin-care-for-freckles=ps2736/
    • http://hamburggermany.men/Joetsu-Japan/Joetsu-Japan_l.php
    • http://www.thecleanzine.com/search.php?q=Cleanzine
    • http://www.plexoft.com/cgi-bin/S.cgi
    • http://riverside-resort.net/1/the-history-of-pop-crabtree-contact.pdf
    • http://riverside-resort.net/1/the-world-wakes-up-to-islam-the-time-to-get-up-from-the-slumber.pdf
    • http://riverside-resort.net/1/the-meanest-doll-in-the-world.pdf
    • http://riverside-resort.net/1/social-insects-an-evolutionary-approach-to-castes-and-reproduction.pdf
    • http://riverside-resort.net/1/student-exploration-fall-tower-answers.pdf
    • http://riverside-resort.net/1/service-engine-soon-light-saturn-sl1.pdf
    • http://riverside-resort.net/1/solution-basic-principles-6th-edittion-himmelblau.pdf
    • http://riverside-resort.net/1/toyota-d4d-gearbox.pdf
    • http://riverside-resort.net/1/student-response-packet-on-archery-answer-key.pdf
    • http://riverside-resort.net/1/the-villa-in-italy.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://www.amazon.com/books-used-books-textbooks/b?node=283155
    • https://www.cnn.com/videos
    • https://pt.wikipedia.org/wiki/Livro_digital
    • http://www.microsofttranslator.com/bv.aspx?ref=SERP&br=ro&mkt=en-US&dl=en&lp=PT_EN&a=https%3a%2f%2fpt.wikipedia.org%2fwiki%2fLivro_digital
    • http://www.microsofttranslator.com/bv.aspx?ref=SERP&br=ro&mkt=en-US&dl=en&lp=PT_EN&a=http%3a%2f%2fwww.incorcg.com.br%2f
    • http://www.philly.com/philly/archives/
    • http://www.loot.co.za/index/html/index1423.html
    • https://www.google.com/?gws_rd=ssl
    • https://www.hollywoodreporter.com/
    • https://www.pcgamer.com/hardware./
    • https://it.wikipedia.org/wiki/EBook
    • http://www.microsofttranslator.com/bv.aspx?ref=SERP&br=ro&mkt=en-US&dl=en&lp=IT_EN&a=https%3a%2f%2fit.wikipedia.org%2fwiki%2fEBook
    • https://www.yahoo.com/lifestyle/tagged/health/
    • http://www.microsofttranslator.com/bv.aspx?ref=SERP&br=ro&mkt=en-US&dl=en&lp=FR_EN&a=http%3a%2f%2fwww.emballagedigest.fr%2fblog.php%3fq%3dpackaging
    • http://starwars.wikia.com/wiki/Han_Solo/Legends
    • https://y.qq.com/
    • http://www.microsofttranslator.com/bv.aspx?ref=SERP&br=ro&mkt=en-US&dl=en&lp=ZH-CHS_EN&a=https%3a%2f%2fy.qq.com%2f
    • https://en.wikipedia.org/wiki/Emotion
    • 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
    +1 more URL(s)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005024.bin
27b5fd280123edcdff552c16ae3ec77f63a610cccaed44de3610673d70ed5346		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5024 10084 bytes
font_01_sfnt_off00007047.bin
71ed3de24cc8c0c6e0c84f260366e9930f937cf69d5ebfcf0d75fc59caf690d6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7047 6852 bytes

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