Malicious PDF — malware analysis report

Static analysis result for SHA-256 e03de5c28147ee9e…

MALICIOUS

PDF

32.9 KB Created: 2020-04-08 10:44:38 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: f00fc528b85c10ae8eff6dd4577d3ecc SHA-1: 434dbf61277ab806e5672991282f224b21178520 SHA-256: e03de5c28147ee9e78bc7793a6665701d3ac5782c249cecf60a3e811df9c68ee
94 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified as a link farm, which is a common technique for SEO manipulation or distributing malicious payloads. The ML classifier strongly indicated maliciousness. No scripts were extracted, but the presence of numerous external URLs suggests a redirection or download attempt.

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://glimpzuk.com/uploads/1/3/0/4/130489346/130489346.html#the+wild+duck+bar+and+restaurant+ltd
    • http://jaredcarrier.com/uploads/1/3/0/6/130639026/fe86ff676100f.pdf
    • http://cruxpx.com/uploads/1/3/0/8/130874058/4316381.pdf
    • http://homespacecorp.com/uploads/1/3/0/5/130551427/kefuwiw.pdf
    • http://agrodharma.com/uploads/1/3/0/6/130639950/mekavano-woliwegiguma-sozuwinaza-tirafemav.pdf
    • http://leannascachetti.com/uploads/1/3/0/5/130541745/1070d8a21e.pdf
    • http://crystalclean-maid.com/uploads/1/3/0/2/130289184/wasutotosujimeguzudu.pdf
    • http://bodysoulcomplementarytherapies.com/uploads/1/3/0/7/130775510/481f0df3098dd84.pdf
    • http://villagecraftsmensavannah.com/uploads/1/3/0/6/130620515/tofelepuzapod.pdf
    • http://candyrodriguez.com/uploads/1/3/0/7/130739067/9998669.pdf
    • http://surveysnowllc.com/uploads/1/3/0/5/130539370/2182671.pdf
    • http://moorebaskets.org/uploads/1/3/0/5/130588550/wudid-wewarukilomage-vebelanejanamat-pofopaduju.pdf
    • http://jmtclinic.org/uploads/1/3/1/0/131071021/virijamo-wevizulij.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_off000059cb.bin
b50159140ddfe3a3792292a91d076a9c0098b1cd9d0d0c4c595d02dcf8517d24		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59CB 7392 bytes

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