Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba94582b58244af6…

MALICIOUS

PDF

36.8 KB Created: 2020-04-01 15:46:25 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: ec3907213cea2037bf1948816da422d9 SHA-1: e383f9bccb6a0f3cbeedfaad3f8b477319ad5798 SHA-256: ba94582b58244af6398753c5e8d8b782428c3fc61935af9c36e27e61c3d82c1c
96 Risk Score

Malware Insights

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

The PDF contains numerous external links, a technique often used for SEO poisoning or to redirect users to malicious sites. The document body, though partially corrupted, contains text suggesting a lure for watching a movie online, which is a common tactic for phishing or malware delivery. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious intent.

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://juliejesternewman.com/uploads/1/3/0/6/130604306/130604306.html#it%27s+complicated+2009+watch+online+free
    • http://my-cjr.com/uploads/1/3/0/5/130546645/75db49.pdf
    • http://sttheresewaylandmi.com/uploads/1/3/0/6/130639313/sunadapona-boxokadil.pdf
    • http://chugachpt.com/uploads/1/3/0/7/130740255/1129095.pdf
    • http://nashvilleweaverwedding.com/uploads/1/3/0/5/130545254/mosesep.pdf
    • http://gdcgd.org/uploads/1/3/0/6/130621011/daxabadupogifakufon.pdf
    • http://ugast.com/uploads/1/3/0/6/130620758/577f06723df.pdf
    • http://takebacktheknight.com/uploads/1/3/0/5/130543870/6732615.pdf
    • http://ferrertherapeutics.com/uploads/1/3/0/5/130543261/mibito.pdf
    • http://myrenovapainting.com/uploads/1/3/0/7/130739153/3429119.pdf
    • http://litterregistrationpapers.com/uploads/1/3/1/4/131407106/zamol-giwenoxulopizal-kepudifot.pdf
    • http://southgeorgiahouseofhope.org/uploads/1/3/0/7/130775363/lumomanu.pdf
    • http://noquest.co/uploads/1/3/0/2/130271121/xojuzafodo_lipalop.pdf
    • http://jmuduilawyer.net/uploads/1/3/0/8/130814132/258620.pdf
    • http://veteranspestcontrol.net/uploads/1/3/0/6/130604310/fuvular_wekagivilatujot_pegobudepow.pdf
    • http://entrenadorafranco.com/uploads/1/3/0/2/130288462/6913213.pdf
    • http://searkbn.org/uploads/1/3/0/8/130874520/lefevev.pdf
    • http://sweetdeens.com/uploads/1/3/0/6/130639877/7369865.pdf
    • http://oroklini-community-choir.com/uploads/1/3/0/6/130639827/jitixoro.pdf
    • http://railox1.com/uploads/1/3/0/9/130969818/9738989.pdf
    • http://activeachievers.com/uploads/1/3/0/8/130813961/9472136.pdf
    • http://blancameira.com/uploads/1/3/0/2/130287872/ximoroxawotema.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_off00006595.bin
770b98e23e7aba779ab796feefcb807270ea1732d573e4126afe687b8c2a21f1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6595 7752 bytes

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