Malicious PDF — malware analysis report

Static analysis result for SHA-256 66b25a18fed8ecdf…

MALICIOUS

PDF

39.6 KB Created: 2020-03-28 04:22:50 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 74ceccb789e860040240df099e0d0692 SHA-1: 48f46766820ffa769be2f4ee2a0372aeacc32a24 SHA-256: 66b25a18fed8ecdf43789bf6039ea966a0304536e7e921c3b35562462e219e2c
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document exhibits characteristics of a malicious lure, specifically employing a fake CAPTCHA to trick users into interacting with embedded links. The document contains a large number of external links, many of which point to PDF files hosted on various domains, suggesting a link farm or SEO poisoning tactic. The primary URL, http://myjac.net/uploads/1/3/0/5/130588827/130588827.html#city+car+driving+2.2+7+keygen, is likely intended to lead the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://myjac.net/uploads/1/3/0/5/130588827/130588827.html#city+car+driving+2.2+7+keygen
    • http://donnarandel.com/uploads/1/3/0/6/130604952/niwozizidulem.pdf
    • http://silverspurtest.com/uploads/1/3/0/8/130874055/2114952.pdf
    • http://www.tylerdrewe.com/uploads/1/3/0/6/130604145/2651824.pdf
    • http://rose-from-concrete.com/uploads/1/3/0/6/130604700/padudubexumutev.pdf
    • http://morganmwilliams.com/uploads/1/3/0/5/130551922/2700185.pdf
    • http://boiserealestatejournal.com/uploads/1/3/0/4/130489361/wemok-jisotegep.pdf
    • http://fordfiestalasvegas.com/uploads/1/3/1/0/131070918/jazofipijit-tumaboripuxesa-dotube.pdf
    • http://staysharpbarbercollege.net/uploads/1/3/0/2/130291531/6851654.pdf
    • http://parentpan.com/uploads/1/3/0/8/130874554/bezopikivupe.pdf
    • http://santangelopainting.com/uploads/1/3/0/6/130604288/waxixafaluz.pdf
    • http://colegiotabladilla.es/uploads/1/3/0/6/130620948/6107145.pdf
    • http://conditionorangeprep.com/uploads/1/3/0/7/130775211/fojijufadugo-samimidavu-kexikijojo-tidagomupemadu.pdf
    • http://blacklensproductions.com/uploads/1/3/0/3/130313316/0146bf01ff786.pdf
    • http://yoh-almo.com/uploads/1/3/0/5/130588328/fce6faabf6.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/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005ba1.bin
1016cd4b2345928d6ab9fff2eea9853357facf2604c6a5967a6cb50fabb3cac8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BA1 9408 bytes
font_01_sfnt_off00007c7d.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C7D 16036 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.