Malicious PDF — malware analysis report

Static analysis result for SHA-256 bfe6f2aa970ed020…

MALICIOUS

PDF

37.3 KB Created: 2020-05-17 02:41:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-24
MD5: f271b8abee6fe8985fd0e650dc6d8bac SHA-1: ea0120ca9cb93e19690af619538c84c9b35611db SHA-256: bfe6f2aa970ed020c0f71ff739bacc6065ca62c3de05fb516f29ed0ef7a584fe
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of external links, many of which point to other PDF files hosted on various domains. This behavior is indicative of a link farm or a redirection scheme designed to obscure the ultimate destination. The primary lure appears to be a 'Facebook photo booth frame template', which is likely a social engineering pretext to encourage users to click the embedded links. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://avabaycompany.com/uploads/1/3/0/6/130639721/130639721.html#facebook+photo+booth+frame+template PDF link annotation
    • http://giftscraftsnmore.com/uploads/1/3/0/2/130289270/ropovegazapemuk.pdfIn PDF document text
    • http://windowcleaningservicesseattle.com/uploads/1/3/1/6/131606252/091c9dc6bec0.pdfIn PDF document text
    • http://evanjameaudio.com/uploads/1/3/0/3/130379252/nofuwigo.pdfIn PDF document text
    • http://pioneerwineandspiritslouisiana.com/uploads/1/3/1/4/131453522/rewulanizodugawusog.pdfIn PDF document text
    • http://lonniefree.net/uploads/1/3/0/5/130550858/xozideb.pdfIn PDF document text
    • http://thekindleproject.com/uploads/1/3/0/7/130775679/1ca6a6dae11f2.pdfIn PDF document text
    • http://allproappliance.org/uploads/1/3/0/6/130604618/palaxodidegudon.pdfIn PDF document text
    • http://chsbahamas.com/uploads/1/3/0/6/130604393/sigunovos.pdfIn PDF document text
    • http://amendedapparel.com/uploads/1/3/0/3/130313215/xafubasefi_rikizibomaler_rilutezunarober.pdfIn PDF document text
    • http://peachwoodfloraldesigns.com/uploads/1/3/1/3/131379047/b4e52.pdfIn PDF document text
    • http://maxzubatsky.info/uploads/1/3/0/7/130775808/6406fbbe9d.pdfIn PDF document text
    • http://onlocation-sh.com/uploads/1/3/0/6/130621179/daxetanipoj_zonezebateb_rirolebenawer.pdfIn PDF document text
    • http://myleombreshow.com/uploads/1/3/0/8/130813429/3558391.pdfIn PDF document text
    • http://dfsdailybest.com/uploads/1/3/0/9/130970004/2125566.pdfIn PDF document text
    • http://bayarefitwear.com/uploads/1/3/1/4/131438036/54b795d3a9.pdfIn PDF document text
    • http://rockymountainmusicfestival.net/uploads/1/3/0/6/130639236/bubumudilam.pdfIn PDF document text
    • http://staffstay.net/uploads/1/3/1/3/131379231/megalosejevogexin.pdfIn PDF document text
    • http://perfectionsalad.com/uploads/1/3/0/3/130323190/motisopixofos.pdfIn PDF document text
    • http://glamdecorbx.com/uploads/1/3/0/6/130604752/xewasitaw.pdfIn PDF document text
    • https://photoboothframesuIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006515.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6515 10928 bytes
SHA-256: 846a7d223585c6d3b48eebb0dfedef2b7f9e89b07cdabbf572ed2c415ab88bdf

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