Malicious PDF — malware analysis report

Static analysis result for SHA-256 76e20d3faf9cf6de…

MALICIOUS

PDF

45.0 KB Created: 2020-03-23 14:07:56 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-08-10
MD5: 65a0644dc8ba98bd3da1b7a2005ca852 SHA-1: 450414f279b7d3829a778b69624cfaade6796c92 SHA-256: 76e20d3faf9cf6dec29dab7384e724da13227b6467a61cfd44594aa1b845aecb
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

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. The primary purpose appears to be directing users to a wide array of external sites, potentially for malicious redirection or content hosting.

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://talkochavlighting.com/uploads/1/3/0/9/130969709/130969709.html#planeacion+figuras+geometricas+preescolar+nuevo+modelo+educativo PDF link annotation
    • http://dentalinnovationsdirect.com/uploads/1/3/0/5/130588315/nekekeginevudax_mabinivad_gaxawotiligu.pdfIn PDF document text
    • http://apresmariage.com/uploads/1/3/0/5/130540714/0dcbbedb908ad.pdfIn PDF document text
    • http://moheal-moringa.com/uploads/1/3/0/6/130621284/40e5f5ad2.pdfIn PDF document text
    • http://artbank.gallery/uploads/1/3/0/6/130603776/jewutox.pdfIn PDF document text
    • http://mkstucco.com/uploads/1/3/0/5/130588403/sixogujijo.pdfIn PDF document text
    • http://drleonardbsmith.com/uploads/1/3/0/6/130620268/ravifagigakulezeg.pdfIn PDF document text
    • http://fixmytaxexperts.com/uploads/1/3/0/9/130969551/nedulagidigitip.pdfIn PDF document text
    • http://glenhouseplants.com/uploads/1/3/0/4/130436182/suweziwuzixezi_juvujiwosoxu_logopabanu.pdfIn PDF document text
    • http://mdraketherapy.net/uploads/1/3/0/7/130739039/rokemugamopawevudaw.pdfIn PDF document text
    • http://techinfoplusideas.com/uploads/1/3/0/2/130288394/fasokifufebabe.pdfIn PDF document text
    • http://new-victory.site/uploads/1/3/0/6/130621802/9213287.pdfIn PDF document text
    • http://farmingdaleforever.org/uploads/1/3/0/7/130739887/koluvup.pdfIn PDF document text
    • http://jpleonides.com/uploads/1/3/0/2/130288338/wasonoz_lawaruwigez.pdfIn PDF document text
    • http://epicgymidaho.com/uploads/1/3/0/2/130271207/guwidibagijexof_soguwexuxikuga_bonadavorosam.pdfIn PDF document text
    • http://drboduryan.com/uploads/1/3/0/5/130538986/piwadaji-gezim.pdfIn PDF document text
    • http://myidahoinsure.com/uploads/1/3/0/5/130539035/5a75b11212b0cd5.pdfIn PDF document text
    • http://anti-agingbyrjxjelly.com/uploads/1/3/0/5/130588574/kukiwunifa-fumakikalelidop.pdfIn PDF document text
    • http://slip-n-klick.com/uploads/1/3/0/5/130539019/2535986.pdfIn PDF document text
    • http://mymcmaintenance.com/uploads/1/3/0/7/130738562/b860e36.pdfIn PDF document text
    • http://zuiderhavendijkconcert.com/uploads/1/3/0/4/130483178/figawegon-komesezuxud-kokuniposuwoka.pdfIn PDF document text
    • http://ooomegaaka.com/uploads/1/3/0/3/130313098/loniguw-pupisemedino.pdfIn PDF document text
    • http://www.mk-samosa.co.uk/uploads/1/3/0/5/130589099/2135666.pdfIn PDF document text
    • http://seanlenhartnarrates.com/uploads/1/3/0/6/130639855/bf795f75.pdfIn PDF document text
    • http://vsprealtyjax.com/uploads/1/3/0/7/130775529/5957449.pdfIn PDF document text
    • http://ascorabyggab.com/uploads/1/3/0/2/130291975/8782494.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 1

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_off0000841f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x841F 8612 bytes
SHA-256: f5812c0d39790fe9e118ef4df9367b71e3acf65ff86b3e8619de6229953069dd

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