Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2e85ecebe8df06f…

MALICIOUS

PDF

41.9 KB Created: 2020-03-22 14:08:18 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 1b9d4ec8e7709ea93832fb8898493500 SHA-1: 5254e93e1ca7984832ff383d5048a433ab705673 SHA-256: f2e85ecebe8df06f9469254fb1a38dd93e4af002e82098d7eea36447187484c7
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of external links, identified as a PDF link farm. The ML classifier strongly indicated maliciousness. The document body, though heavily obfuscated, contains references to URLs that are part of this link farm. This suggests the PDF is designed to redirect users to potentially malicious content hosted on 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://msgarletts-hancock.com/uploads/1/3/0/6/130620483/130620483.html#big+little+lies+2+cast+imdb
    • http://mail.skinboostlab.org/uploads/1/3/0/3/130313453/daziziwabil-lugesenog-bomuxu-dajapule.pdf
    • http://hostmaster.tsv-floeha.de/uploads/1/3/0/5/130551309/pekomej.pdf
    • http://arabellaboutiqueofnmb.com/uploads/1/3/0/7/130739894/nuvudi.pdf
    • http://www.pidemeloquetuquieres.com/uploads/1/3/0/9/130969684/5892330.pdf
    • http://sublimeinstantlift.com/uploads/1/3/0/8/130874396/deduzewijepi-zuxozi-wosepaxilifubo-nerepoj.pdf
    • http://3riverpartners.com/uploads/1/3/0/8/130814189/724287.pdf
    • http://redrobynsnest.com/uploads/1/3/0/7/130776458/8282024.pdf
    • http://www.jupitersparks.com/uploads/1/3/0/6/130604405/buvudofapinase.pdf
    • http://helenedwardsfineart.com/uploads/1/3/0/5/130551824/limabosoza_wexolubipe_gevurimujusifu_puxidifag.pdf
    • http://centraliowa.org/uploads/1/3/1/0/131070934/wolozugalopusedivu.pdf
    • http://grovetonfishandgamenh.com/uploads/1/3/0/4/130483616/ad4d902b.pdf
    • http://personalnetworkappliance.net/uploads/1/3/0/5/130543289/3600b1ce57b526.pdf
    • http://comic-card-creation.com/uploads/1/3/0/5/130541656/sareje-pagikuvefeku-foxutogaxer-runesexidefawok.pdf
    • http://serisinaredu.com/uploads/1/3/0/5/130589231/3257437.pdf
    • http://mta-sts.mail.arkholdingjapan.com/uploads/1/3/0/7/130739697/ce587cdf.pdf
    • http://jennifer-matt.com/uploads/1/3/0/8/130874082/5618909.pdf
    • http://oratert.host/uploads/1/3/0/8/130814293/kaniwivodebusumu.pdf
    • http://www.annaelesuericette.com/uploads/1/3/0/5/130551226/3660569.pdf
    • http://www.lbardranch.com/uploads/1/3/0/5/130551206/95421cafb38.pdf
    • http://morgansparkson.com/uploads/1/3/0/2/130271099/sirisir_xejopinobejaza_xuniratabe.pdf
    • http://updogllc.com/uploads/1/3/0/9/130969777/pefokasarinaziv_mebexuvuzeb_xobimodegux_bemugipabufol.pdf
    • http://www.swiftlegaldocumentpreparationservice.com/uploads/1/3/0/6/130639318/4777022.pdf
    • http://nailbarmilwaukee.com/uploads/1/3/0/6/130621938/4374475.pdf
    • http://www.swiftlegaldocumentpreparationservice.com
    • 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_off00007824.bin
4d4bfd91027d397833b9398e380c8adac2d5f33dddecc05c59c49efd00cf0a98		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7824 9084 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.