Malicious PDF — malware analysis report

Static analysis result for SHA-256 6466c0d857589b21…

MALICIOUS

PDF

42.9 KB Created: 2020-03-25 13:29:43 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 7fc18739e81f509f189570d37bba8b05 SHA-1: 3999fce4e8d32560347e0b1f132c20ca0729dab4 SHA-256: 6466c0d857589b21c645545acf9c7cc3bc23d046cc11877f15a31d0be90f98e0
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell T1203 Exploitation for Client Execution

This PDF document contains a large number of external links, many of which point to other PDF files, suggesting a link farm or SEO poisoning attempt. The document also includes a 'Clipboard command execution lure', instructing the user to copy and paste content into a shell, which is a common technique to trick users into executing malicious commands. The ML classifier strongly flagged this PDF as malicious. The primary IOC is the URL http://oneagleswingsvic.com/uploads/1/3/0/5/130551526/130551526.html#proficy+machine+edition+7.0+crack, which is presented as a lure for software cracks.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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
  • 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://oneagleswingsvic.com/uploads/1/3/0/5/130551526/130551526.html#proficy+machine+edition+7.0+crack
    • http://tomstephens.co.uk/uploads/1/3/0/6/130604181/6371764.pdf
    • http://perfectfitgiftshop.com/uploads/1/3/0/5/130589270/8674c0d7.pdf
    • http://nostressgardening.com/uploads/1/3/0/6/130605124/24135.pdf
    • http://warrantedplumbingsvcs.com/uploads/1/3/0/6/130621713/tipafufifu_xusezeremadona_zegotesafuduzi.pdf
    • http://kaleidoscoperecords.net/uploads/1/3/0/4/130489926/xomukipumufoxekot.pdf
    • http://biomassinnovations.com/uploads/1/3/0/5/130550744/2844248.pdf
    • http://davinajennile.com/uploads/1/3/0/5/130544591/tanetonamesi_jetetaxuresada_nazekinojim_rigefotomoz.pdf
    • http://jinhup.net/uploads/1/3/0/4/130483906/fodirozapa-divopipizut.pdf
    • http://www.rocknribsfestival.co.uk/uploads/1/3/0/6/130640109/8660602.pdf
    • http://nishadalaruzmani.net/uploads/1/3/0/7/130739951/7109528.pdf
    • http://webdisk.sheknowsadventure.com/uploads/1/3/0/7/130776368/4a31d94.pdf
    • http://stubblefieldhoa.com/uploads/1/3/0/7/130739470/walaxawafi_rides_nilagosijemewo_zafuba.pdf
    • http://www.wamr-db.com/uploads/1/3/0/6/130639205/jibisuzakipevu.pdf
    • http://caloundralittleathletics.com/uploads/1/3/0/6/130639757/3472700.pdf
    • http://whybeclark.com/uploads/1/3/0/4/130436339/3374228.pdf
    • http://hostmaster.tandartsenpraktijkkint.be/uploads/1/3/0/6/130621035/sinogubepowewod.pdf
    • http://tutump.com/uploads/1/3/0/6/130604598/5fcacc4b9858090.pdf
    • http://ediblealchemy.organic/uploads/1/3/0/2/130291441/belefiwuligudupizep.pdf
    • http://thediazobserver.com/uploads/1/3/0/6/130640022/8588061.pdf
    • http://mx.sunshinecharities.com/uploads/1/3/0/4/130483158/29963265360e.pdf
    • http://aishadhunterphotography.net/uploads/1/3/0/7/130739383/wevivuwoj.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_off000077c3.bin
08277c750276f8c6db0baa9ce6d732695e456075a014ff15222fd4b6abe39a78		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77C3 11148 bytes

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