Malicious PDF — malware analysis report

Static analysis result for SHA-256 18d94656857b3872…

MALICIOUS

PDF

41.6 KB Created: 2020-03-14 12:43:02 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 4c4f9b9f82fb95a1322545816138b83f SHA-1: 45faaea821bdce0e833ed2a4a9e863c9bd38df84 SHA-256: 18d94656857b387294ab48bf62166e6aa34f2df86897ecee7a63ad851dadc2ce
96 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to PDF files, suggesting a link farm or a method to distribute further malicious content. The ML classifier strongly indicated maliciousness, and the presence of embedded URLs further supports this. No scripts were extracted, but the structure and URL patterns are indicative of a malicious PDF designed to redirect users or host malicious payloads.

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://soccer.peakathleticsystems.com/uploads/1/3/0/7/130738644/130738644.html#viva+video+app
    • http://youngatartmn.com/uploads/1/3/0/6/130621850/zadubijagu-jafusafo.pdf
    • http://readingrescuetalk.com/uploads/1/3/0/7/130740393/1791397.pdf
    • http://webmail.fujifilmreviews.com/uploads/1/3/0/6/130639910/nufixidedeze_buzixaxir_wapomarawazab_wogojivulazukax.pdf
    • http://www.dnclh.com/uploads/1/3/0/5/130588599/mimajoxuwotuwefa.pdf
    • http://www.kateblodgettdesigns.com/uploads/1/3/0/5/130544243/livixitifosonegoxer.pdf
    • http://netoaterro.com/uploads/1/3/0/7/130739578/guvotuxoz.pdf
    • http://friend-vibes.com/uploads/1/3/0/5/130551132/cd416b83d539.pdf
    • http://tourdecroghan.com/uploads/1/3/0/6/130620781/273462454.pdf
    • http://www.smileawhiletshirts.com/uploads/1/3/0/5/130588560/fekuf.pdf
    • http://agapekarellc.com/uploads/1/3/0/6/130604724/zizawutadetojimidar.pdf
    • http://servipacexpress.com/uploads/1/3/0/8/130874646/4134650.pdf
    • http://moneymogul.net/uploads/1/3/0/5/130589431/1866367.pdf
    • http://www.exploringmagazine.co.uk/uploads/1/3/0/8/130814907/vudufefidate.pdf
    • http://www.winifredroadchurchofchrist.com/uploads/1/3/0/2/130287457/zisimumulanajotabaxi.pdf
    • http://bournspropertyservices.com/uploads/1/3/0/6/130639699/jakowoduzi_tijowigi.pdf
    • http://www.stevenamiller.com/uploads/1/3/0/6/130620751/ca6372e084091.pdf
    • http://fiftycentfantasy.com/uploads/1/3/0/7/130775166/jonoveku.pdf
    • http://cdc-tmsolutions.co.uk/uploads/1/3/0/2/130287401/kogiwonokulon.pdf
    • http://mail.newenglanddentalassociates.com/uploads/1/3/1/0/131069859/2421957.pdf
    • http://nataliadgrafica.com/uploads/1/3/0/6/130639703/80f814f3421cfc1.pdf
    • http://welcometo6h.com/uploads/1/3/0/6/130620371/2811141.pdf
    • http://mindforyou.org/uploads/1/3/0/5/130589159/tanizofem.pdf
    • 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/
    • http://www.adobe.com/).Noto
    • http://www.google.com/get/noto/http://www.adobe.com/type/This
    • http://scripts.sil.org/OFLNoto

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006d53.bin
861cf6c081db420e2754646eedf9484c1e0bb2372f6431e910eeaa138b42f686		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D53 7876 bytes
font_01_sfnt_off00008bb8.bin
37d45bb767782914137753a6fc95f91e622e7a806039e893722ffdd697646e18		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8BB8 4164 bytes

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