Malicious PDF — malware analysis report

Static analysis result for SHA-256 f282ba090f40363d…

MALICIOUS

PDF

43.2 KB Created: 2020-03-27 09:23:48 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-07
MD5: 01130bc66da083b79414d7157fb4e3af SHA-1: 56931af64ae09e481ecaa799a66751726cb11ec1 SHA-256: f282ba090f40363d2d396aa1dbdb76489a74af6493d98391ee4d4e32180ffc5e
96 Risk Score

Malware Insights

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

This PDF document was flagged by an ML classifier as malicious. It contains a large number of external links, many pointing to PDF files hosted on various domains, suggesting a link farm or redirection scheme. The document body contains garbled text and references to 'wkhtmltopdf', indicating it was likely generated programmatically. The primary intent appears to be directing users to a network of potentially malicious or ad-filled websites.

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://impact-active.com/uploads/1/3/0/5/130550787/130550787.html#puerto+de+comunicaciones+pci PDF link annotation
    • http://floridajewishfunerals.com/uploads/1/3/0/2/130271154/lugos.pdfIn PDF document text
    • http://oginnovate.com/uploads/1/3/0/4/130436078/2ad275.pdfIn PDF document text
    • http://richardmedina.net/uploads/1/3/0/5/130588282/42172e80120a3c.pdfIn PDF document text
    • http://hostmaster.enterprisesportsandsocialclub.co.uk/uploads/1/3/0/3/130313536/vatimodojon-wivufevamifodos-galobel-lonezi.pdfIn PDF document text
    • http://dahidesign.com/uploads/1/3/0/7/130739223/lowozo_lajotululere_gexaxe_zopuwu.pdfIn PDF document text
    • http://felicitysandfordmarketing.com/uploads/1/3/0/6/130605222/846817.pdfIn PDF document text
    • http://www.nyikigkingston.com/uploads/1/3/0/8/130813111/100979.pdfIn PDF document text
    • http://vandenbossracing.com/uploads/1/3/0/6/130639143/52af4239e3a8.pdfIn PDF document text
    • http://allstatepavingandmasonry.com/uploads/1/3/0/6/130604980/4174c0.pdfIn PDF document text
    • http://konak9.com/uploads/1/3/0/2/130272080/9220484.pdfIn PDF document text
    • http://cloverlegacy.com/uploads/1/3/1/3/131398455/9025886.pdfIn PDF document text
    • http://preview.crestonedevelopment.com/uploads/1/3/0/5/130543394/rujirojibirofiz.pdfIn PDF document text
    • http://amarillopetspa.com/uploads/1/3/0/6/130604209/folasawujesov.pdfIn PDF document text
    • http://infinitesolutionslifecoaching.com/uploads/1/3/0/8/130874150/760860.pdfIn PDF document text
    • http://ledbase.org/uploads/1/3/0/2/130289310/44d48318735c.pdfIn PDF document text
    • http://uniquelylv.com/uploads/1/3/0/6/130620783/kejuzefudi.pdfIn PDF document text
    • http://usabeachtour.org/uploads/1/3/1/3/131383708/7a9444c3556.pdfIn PDF document text
    • http://worldinfonews.org/uploads/1/3/0/5/130539763/3750781.pdfIn PDF document text
    • http://101taiwantour.com/uploads/1/3/0/3/130379145/bizafepitijamer.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_off0000813c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x813C 7928 bytes
SHA-256: 3abfacd99877d16f2bebff69ca37b360e753e1d50ed7f33ff5d9aa16f1ea03b5

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