Malicious PDF — malware analysis report

Static analysis result for SHA-256 f12b99d1afaae5ca…

MALICIOUS

PDF

46.6 KB Created: 2020-04-11 00:57:58 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: d6033d5a2b64c228249b39c34314957f SHA-1: f3a5002bc0e045f2d97f9e73611d93ed6bcbc69f SHA-256: f12b99d1afaae5ca2c3e56e1164bc2f4f050d9e1e13b3601a933002e59891dbe
94 Risk Score

Malware Insights

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

This PDF document contains a large number of external links, characteristic of a link farm or SEO spam campaign. The document body mentions 'Bloodlust metal pdf download', suggesting a lure to entice users to click on the embedded links. The primary heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external PDF links, with 'skooterzandshooterz.com' being a dominant host. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://lennoxweb.com/uploads/1/3/0/6/130639849/130639849.html#bloodlust+metal+pdf+download
    • http://skooterzandshooterz.com/uploads/1/3/0/7/130739254/jigowawavatadimiwu.pdf
    • http://whatscarolecooking.com/uploads/1/3/1/0/131070071/zopir_gizatib_vodar.pdf
    • http://officebuzz.net/uploads/1/3/0/6/130620958/fitivotox.pdf
    • http://otrhostel.com/uploads/1/3/0/7/130740441/6cf15f0c63.pdf
    • http://mywoodshop.co/uploads/1/3/0/2/130291766/sibekefa.pdf
    • http://lrozarphotography.us/uploads/1/3/0/5/130588872/8929059.pdf
    • http://residentialconsultingllc.net/uploads/1/3/0/8/130815031/4723348.pdf
    • http://firstresponderservices.ca/uploads/1/3/0/4/130476395/gomorikuwidulo_zaxek_supivuko.pdf
    • http://saladogallery.com/uploads/1/3/0/5/130589133/vovegalawav.pdf
    • http://elizabetglasertroyer.com/uploads/1/3/0/6/130620265/dedoragiwiruguge.pdf
    • http://neuindeutschland.de/uploads/1/3/1/4/131409274/xetivejateta-wewupajavadib-gimepovo-xozetemako.pdf
    • http://jordansj22.org/uploads/1/3/0/2/130288391/vagirifeluzukalapolo.pdf
    • http://zachfrizzell.com/uploads/1/3/0/8/130814980/sonabakuluz.pdf
    • http://cynwessling.com/uploads/1/3/0/4/130483447/9643347.pdf
    • http://bunniesareus.com/uploads/1/3/0/2/130270811/275980.pdf
    • http://officebuzz.n
    • 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_off000088eb.bin
88af2549611510c5cdddfa52e0dd72ad77024cabdeb856399b328a08490e01e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88EB 9964 bytes

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