Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f8bb1e1734d53e8…

MALICIOUS

PDF

40.4 KB Created: 2020-03-17 18:24:09 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: c70a0eb3788190a7bfd27357d0f11882 SHA-1: 6e7f414a3b86c2ee5ea6ad20f8a53ba1751f2528 SHA-256: 7f8bb1e1734d53e8805b572a367cea54c53535b2a043efe35beef4d4e44f9fd6
94 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the 'PDF_SEO_LINK_FARM' heuristic, pointing to various domains. The document body, though partially corrupted, contains text related to 'Reglamento del salto de longitud pdf' and mentions wkhtmltopdf, suggesting a lure to external content. The ML classifier strongly indicates maliciousness, likely related to SEO spam or a phishing campaign directing users to potentially malicious sites.

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://longhorncaverns.info/uploads/1/3/0/4/130491932/130491932.html#reglamento+del+salto+de+longitud+pdf
    • http://sheriahernphotography.com/uploads/1/3/0/4/130489162/a87207c0.pdf
    • http://moderntutoringandeducationservices.com/uploads/1/3/0/6/130639939/cdf191909e6aff.pdf
    • http://rebootventures.co.uk/uploads/1/3/0/4/130483552/7411531.pdf
    • http://americanbenefitsolutions.net/uploads/1/3/0/6/130604518/8655614.pdf
    • http://localdominationseo.com/uploads/1/3/0/2/130291800/5006596.pdf
    • http://robertoluigimauri.com/uploads/1/3/0/2/130289259/bb61df11c44df.pdf
    • http://www.mimigoesketo.com/uploads/1/3/0/6/130604191/e5e937743.pdf
    • http://jmgproperties.net/uploads/1/3/0/5/130550741/978a8fbe9e3.pdf
    • http://travelshopdo.com/uploads/1/3/0/3/130312972/0c3f36.pdf
    • http://staceycollinsdesigns.com/uploads/1/3/0/7/130740512/6762219.pdf
    • http://drakenn.net/uploads/1/3/0/6/130620468/3411856.pdf
    • http://olallagreens.biz/uploads/1/3/0/5/130590464/c033f.pdf
    • http://www.misszoilaj.com/uploads/1/3/0/9/130969373/ed92b37e55e7.pdf
    • http://mrsleep.org/uploads/1/3/0/7/130775737/0c79ee74.pdf
    • http://marylandgholsonfoundation.org/uploads/1/3/0/7/130775928/083a76913957f53.pdf
    • http://www.boshuster.org/uploads/1/3/0/2/130272095/zowuj.pdf
    • http://www.billingdoctors.com/uploads/1/3/0/6/130604198/19b6a3abb2.pdf
    • http://solcreative.co.nz/uploads/1/3/0/5/130589070/2687356.pdf
    • http://bogadancers.com/uploads/1/3/0/2/130273625/510764.pdf
    • http://lessonsfromliving.org/uploads/1/3/0/4/130435892/fefaweluwadalex.pdf
    • http://socialbutterflyslp.com/uploads/1/3/0/6/130604728/bibizasikaw.pdf
    • http://creativefathering.com/uploads/1/3/0/6/130604564/kavepirinobamul.pdf
    • http://www.robinsoninternational.org/uploads/1/3/0/6/130639312/6049359.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_off0000740e.bin
04cae9523053b4be5499f46b8ab3e95dfe99f896807514dd52a1aaa831bf8f4a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x740E 8256 bytes

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