Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ed640022c9c1276…

MALICIOUS

PDF

42.7 KB Created: 2020-03-24 05:17:40 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: f7a39ac8c728a617361fbf154209e806 SHA-1: 253e2f5fa2d0b5a264addb082110e4046cb296a6 SHA-256: 0ed640022c9c12762d78e99ced000a6e270d9b716344595d9632773e521dd8d5
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1204.002 Malicious Link

The document contains a lure related to Microsoft Office activation serials, combined with heuristics indicating a clipboard command execution lure and a password-protected archive lure. The numerous external PDF links suggest a link farm used to distribute further malicious content. The ML classifier strongly flagged this PDF as malicious, indicating a high likelihood of it being used to download and execute a second-stage payload.

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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://kmipropertieslimited.com/uploads/1/3/1/1/131163984/131163984.html#serial+de+activacion+para+microsoft+office+professional+plus+2016
    • http://aramnita.com/uploads/1/3/1/1/131164472/pimeda-xubaxosiwof.pdf
    • http://5053lankershim.com/uploads/1/3/0/7/130776726/kisijete.pdf
    • http://www.aqua2s.fr/uploads/1/3/0/5/130539084/jokaxeguzaxe.pdf
    • http://ecobub3d.com/uploads/1/3/0/3/130323568/7a4fbfb02b00.pdf
    • http://mlcvideos.com/uploads/1/3/0/4/130492771/36bd6b51545d3.pdf
    • http://edukasi.info/uploads/1/3/0/4/130477945/gibazaragugun.pdf
    • http://hostmaster.craftpixie.co.uk/uploads/1/3/0/7/130739294/6321075.pdf
    • http://movingcompanyokc.com/uploads/1/3/0/3/130324370/f4ea5cfe5f8.pdf
    • http://aussiehomes.fund/uploads/1/3/0/6/130604402/muzumatu_sepetazipi.pdf
    • http://referrerflow.co.uk/uploads/1/3/0/6/130604117/jejujopej_vofutujez_wamij_detozapaz.pdf
    • http://haydenshaven.net/uploads/1/3/0/5/130540197/vanirevimilog.pdf
    • http://bobodigitalmarketing.com/uploads/1/3/0/2/130291673/pedodagujutiw.pdf
    • http://intrinsiclifesciences.us/uploads/1/3/0/8/130874133/9367351.pdf
    • http://onlinetechedresearch.com/uploads/1/3/0/6/130605390/e7432.pdf
    • http://blitzfund.me/uploads/1/3/0/3/130379485/a9e10b381e.pdf
    • http://systemskateboards.com/uploads/1/3/0/5/130550711/812688.pdf
    • http://www.canon-services.com/uploads/1/3/0/4/130477864/7522280.pdf
    • http://nolagirlcustomcreations.com/uploads/1/3/0/4/130477468/varufabexibo.pdf
    • http://wellingtonyogawithpenina.com/uploads/1/3/0/7/130775704/6512112.pdf
    • http://nashvillerollingpincompany.com/uploads/1/3/0/8/130813606/794265.pdf
    • http://meghanhagar.com/uploads/1/3/0/7/130738814/semejisofawevenunudo.pdf
    • http://naturallog.net/uploads/1/3/0/2/130270958/8900654.pdf
    • http://liamatera.net/uploads/1/3/0/7/130775522/7120350.pdf
    • http://whatiseeitfromtheavenue.com/uploads/1/3/0/7/130739133/94d39d911b6b.pdf
    • http://musclebears-themusical.com/uploads/1/3/0/7/130738680/feponuwozapekom.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/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007c5b.bin
e358726b89a63f015d7095e0e206cd60cb996ef6ebade1b7beab2095705dbbe7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C5B 8840 bytes

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