Malicious PDF — malware analysis report

Static analysis result for SHA-256 2365c5125b2320ac…

MALICIOUS

PDF

49.8 KB Created: 2020-03-23 01:47:02 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 17060657d749bd61fc311b1b3200cc73 SHA-1: 284db72eaeb12999d1348bdb5b96d2641cdbae96 SHA-256: 2365c5125b2320ace7118f3cbec1500a390af584e175c5ad657d28e49473d912
94 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. The ML classifier also strongly indicated maliciousness. The primary attack pattern appears to be SEO poisoning or a link farm designed to drive traffic to potentially malicious or unwanted content hosted across numerous domains.

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://smartagingservices.net/uploads/1/3/0/6/130604958/130604958.html#la+nueva+salud+publica+que+es
    • http://soullinks.org/uploads/1/3/0/6/130639762/b68e3d5198b.pdf
    • http://bellebaeuk.com/uploads/1/3/0/4/130483474/lemosilakivulonotev.pdf
    • http://webdisk.wilmingtonchristian.org/uploads/1/3/0/4/130483993/vabasug_zeforij_dobedo.pdf
    • http://alphatoro.com/uploads/1/3/0/8/130874680/wixojafipim-betesajekuji-wovikubogafim-rosuvufevep.pdf
    • http://aplusrenos.ca/uploads/1/3/0/3/130323592/2660f8fdd946abc.pdf
    • http://asiapartnerplatform.com/uploads/1/3/0/7/130738914/jemokoposumamil_jetixuk.pdf
    • http://cadenceresource.com/uploads/1/3/0/8/130815080/xuruxizozilep.pdf
    • http://lunchbox-gourmet.com/uploads/1/3/0/7/130738525/wulopewutuwaxe_parilogop.pdf
    • http://firetrapmeds.com/uploads/1/3/0/5/130540072/3597105.pdf
    • http://1stautomotiveadministrators.com/uploads/1/3/0/6/130620453/fafumuki_rumajilum_jalavefoj_tulurexebusi.pdf
    • http://cheyenne-stastyshyn.com/uploads/1/3/0/7/130776358/1168236.pdf
    • http://fashionjail.com/uploads/1/3/0/2/130271072/88d1c380a8.pdf
    • http://etrelibre.com/uploads/1/3/0/8/130813143/bavoji.pdf
    • http://thehatstore.us/uploads/1/3/0/2/130288378/dulirab.pdf
    • http://www.drkileortigo.com/uploads/1/3/0/7/130739513/7927515.pdf
    • http://www.hanc.org.uk/uploads/1/3/0/5/130551140/takizojixefisok-deginadujikuvu-fenejibutigati.pdf
    • http://paperowlpress.com/uploads/1/3/0/4/130476091/faxise-wawumavak.pdf
    • http://www.3minspection.net/uploads/1/3/0/4/130483041/1b3911.pdf
    • http://benkiashaninka.com/uploads/1/3/0/7/130775092/5147086.pdf
    • http://authortonjamurphy.com/uploads/1/3/0/4/130476579/3821024.pdf
    • http://www.ncoconstruction.com/uploads/1/3/0/5/130551486/443462.pdf
    • http://kittenconvict.net/uploads/1/3/0/2/130289540/jobexuzarik-bofew-simiku.pdf
    • http://www.altinovo.com/uploads/1/3/0/6/130639634/godepiravesomewuji.pdf
    • http://www.parisonlineshoerepair.com/uploads/1/3/0/5/130551864/1050793.pdf
    • http://www.altinovo.com/uploads/1/3/0/6/130639634/godepiravesomewuj
    • 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_off000096b5.bin
59c94aabe4e2400e0c4184daec3f51ef4f8f9210c41e0774550f64a8829bcebf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x96B5 9312 bytes

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