Malicious PDF — malware analysis report

Static analysis result for SHA-256 769e286cb5831ec6…

MALICIOUS

PDF

47.8 KB Created: 2020-03-09 11:01:59 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-08-10
MD5: 21299a3b54678941e3a166f973cd77a7 SHA-1: ece9713172799d4eb12276cd1c2b1793cdf55ada SHA-256: 769e286cb5831ec6559fcc3cf394b5a6877d48c26a039ad2156d4b30ca849392
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a link farm or SEO manipulation tactic. The ML classifier also strongly indicated maliciousness. While no scripts were directly extracted, the structure and numerous external URLs suggest the document is designed to redirect users to potentially malicious content or to manipulate search engine rankings.

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://maxmiddleton.studio/uploads/1/3/0/4/130489563/130489563.html#benefits+of+activity+based+costing+in+healthcare PDF link annotation
    • http://otelhosp.com/uploads/1/3/0/2/130274322/bakinipabemaxaw.pdfIn PDF document text
    • http://theinnonsilverlake.com/uploads/1/3/0/6/130620843/wimelevud.pdfIn PDF document text
    • http://www.kylinelsonteaching.com/uploads/1/3/0/5/130542977/gejumu_xefugisax_rewebovimi_xefifibek.pdfIn PDF document text
    • http://studio1999.shop/uploads/1/3/0/6/130604872/tules-kizokiligawix-jirinepol.pdfIn PDF document text
    • http://mentalhealthyouthteacher.com/uploads/1/3/0/2/130289467/nadevu.pdfIn PDF document text
    • http://clapchatlaughaskpray.net/uploads/1/3/0/7/130775031/dfce8d1cf246c0.pdfIn PDF document text
    • http://airmartservices.ca/uploads/1/3/0/6/130604824/rolumiwavufigo.pdfIn PDF document text
    • http://my-closet-online.com/uploads/1/3/0/6/130621487/sizuvonatijijuxufep.pdfIn PDF document text
    • http://matajagad.com/uploads/1/3/0/7/130776096/suvokuxorazupof.pdfIn PDF document text
    • http://polytrontechnology.com/uploads/1/3/0/7/130776263/pavasifexidosokil.pdfIn PDF document text
    • http://rencommunicatons.com/uploads/1/3/0/6/130621022/gixaserojabetip-patopu.pdfIn PDF document text
    • http://www.vegastourstop.com/uploads/1/3/0/4/130483986/divijofawekotiv.pdfIn PDF document text
    • http://smeta.org/uploads/1/3/0/8/130874253/gotagewuv-toguj-bavewi.pdfIn PDF document text
    • http://naturalhealthexpo.ie/uploads/1/3/0/6/130620700/7216105.pdfIn PDF document text
    • http://www.michaelmoreaudesign.com/uploads/1/3/0/7/130776041/213707.pdfIn PDF document text
    • http://baijinguojiyulechengdaili.br3h.com/uploads/1/3/0/4/130490977/fowafegatofivima.pdfIn PDF document text
    • http://diasporawearuk.co.uk/uploads/1/3/0/6/130605248/a87d61a6d8.pdfIn PDF document text
    • http://berardinotherealtaste.com/uploads/1/3/0/6/130621059/govibobabu.pdfIn PDF document text
    • http://theblueandgreennews.com/uploads/1/3/0/4/130488616/rugugo-lejolib-kowofiropata-febipem.pdfIn PDF document text
    • http://www.fireflyfinishes.com/uploads/1/3/0/5/130588786/3567975.pdfIn PDF document text
    • http://www.thepixelshelf.com/uploads/1/3/0/5/130551671/2935865.pdfIn 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

Related samples 2

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_off000092ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92CA 7292 bytes
SHA-256: 02d5405cf87b05045891efe48c60973795f6ee9846fc9489265c82b16ee47d58

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