Malicious PDF — malware analysis report

Static analysis result for SHA-256 04c2fc6d0f27bcb4…

MALICIOUS

PDF

48.6 KB Created: 2018-06-11 09:31:50 -04:00 Authoring application: wkhtmltopdf 0.12.4 (via Qt 4.8.7)
MD5: 6606f7fec519eaf409cfc5842ddb4619 SHA-1: eb8a905967e32d5a8786f7a64f889963e445bab3 SHA-256: 04c2fc6d0f27bcb4c968c78d36ae5799547bbe193085376f6ba45e2b6f5f0feb
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 'free download' SEO-poisoning document. It embeds external URIs pointing to download URLs, specifically 'http://uncpbisdegree.com/download3.php?q=user-guide-honeywell-chronotherm-cm51-user-guide.pdf'. The document body also contains these URLs, reinforcing the lure to download a file. The primary goal appears to be tricking users into downloading potentially malicious content disguised as a user guide.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6977

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=user-guide-honeywell-chronotherm-cm51-user-guide.pdf
    • http://uncpbisdegree.com/download4.php?q=user-guide-honeywell-chronotherm-cm51-user-guide.pdf
    • https://www.e-manual.eu/en/download-manual-10/207695/central-heating-honeywell-cm51.html
    • https://www.e-manual.eu/en/brands-6/HONEYWELL/95-central-heating.html
    • https://www.e-manual.eu/en/download-manual-10/207695/CM
    • http://homeappliance.manualsonline.com/manuals/mfg/honeywell/cm51_7.html
    • http://jcreolemusic.com/reads-online/user-guide-honeywell-chronotherm-cm51-user-guide.pdf
    • https://www.manualagent.com/honeywell/chronotherm-cm67/users-manual
    • http://www.manualsbase.com/manual/585596/thermostat/honeywell/honeywell_thermostat_cm51/
    • https://www.manualagent.com/honeywell/chronotherm-cm67/users-manual/page-5
    • http://www.honeywelluk.com/Documents/User-Guide/pdf/1068.pdf
    • http://uncpbisdegree.com/1/swaziland-exams-2018-timetable-igcse.pdf
    • http://riverside-resort.net/1/wycliffe-and-the-school-bullies.pdf
    • http://uncpbisdegree.com/1/sudharsan-engineering-college.pdf
    • http://riverside-resort.net/1/workbook-to-accompany-anatomy-and-physiology-revealed-version-3-0-mp4.pdf
    • http://riverside-resort.net/1/updated-readygen-first-grade-teachers-guide.pdf
    • http://riverside-resort.net/1/vladimir-lenin.pdf
    • http://uncpbisdegree.com/1/spss-pc-studentware-and-3-5-a.pdf
    • http://uncpbisdegree.com/1/study-guide-chapter-22-meiosis-answer-key.pdf
    • http://riverside-resort.net/1/working-capital-solutions-inc.pdf
    • http://riverside-resort.net/1/visiting-card-design-free-psd-download.pdf
    • https://www.manualagent.com/honeywell/chronotherm-cm67/users
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://www.manualslib.com/manual/763805/Honeywell-Cm67.html
    • https://www.manualslib.com/brand/
    • https://www.manualslib.com/brand/honeywell/
    • https://www.manualslib.com/brand/honeywell/thermostat.html
    • http://www.fixya.com/support/t11103927-manual_honeywell_cm51
    • http://www.fixya.com/troubleshoot/honeywell/heating_cooling
    • http://www.fixya.com/support/p474174-honeywell_programmable_thermostat_heater
    • https://customer.honeywell.com/resources/techlit/TechLitDocuments/69-0000s/69-1510.pdf
    • https://customer.honeywell.com/resources/techlit/TechLitDocuments/69-0000s/69-0690.pdf
    • https://www.youtube.com/watch?v=edE8gfR8_KI
    • 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://customer.honeywell.com/resources/techlit/TechLitDocuments/
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicense

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007154.bin
493f530e3ca7bf31d86ccfdbb0eed0e6c9422de75721242f37a63c8fefc363df
pdf-font-stream PDF embedded font (sfnt) at offset 0x7154 14504 bytes
font_01_sfnt_off00009d65.bin
e33c0bee4f42f4f7e830a7825ce68fd69994ada1580194f65481648553e35c65
pdf-font-stream PDF embedded font (sfnt) at offset 0x9D65 8728 bytes