Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc18a134e6ac29a8…

MALICIOUS

PDF

48.9 KB Created: 2020-03-25 00:41:39 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 0e8edd3aecb5b8e5a163add6f9ce48fc SHA-1: f8d3a55074c4d1d20446c0d7ac83bc62cd6d58bc SHA-256: dc18a134e6ac29a87f876267ac16d36ab08ff76e9c5d2d56687185a695605483
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF document contains a large number of external links, many of which point to other PDF files, suggesting a link farm or SEO abuse tactic. The document body text explicitly mentions 'free sales business plan template powerpoint', indicating a lure to encourage users to click on the embedded URLs. The ML classifier strongly flagged this PDF as malicious, and the presence of numerous external links supports this assessment. No scripts were extracted from this sample.

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://clarkandbrownupholstery.com/uploads/1/3/0/4/130490155/130490155.html#free+sales+business+plan+template+powerpoint
    • http://www.jessicamgold.com/uploads/1/3/0/2/130288939/f799fa9d7dc036.pdf
    • http://millyproducts.com/uploads/1/3/0/5/130538818/povakuvorusil_tenekotisoluw_dudomezazi.pdf
    • http://gcmusictv.net/uploads/1/3/0/9/130969868/c927527de94b2.pdf
    • http://sweetsunlimitedaz.com/uploads/1/3/0/3/130379740/bemofetotosageke.pdf
    • http://patricknemechek.com/uploads/1/3/0/7/130739686/benukun_runasen.pdf
    • http://www.yuwangsociology.com/uploads/1/3/0/4/130435577/232875d3e2f74.pdf
    • http://naturalhealthexpo.ie/uploads/1/3/0/7/130776641/11fb3d9e.pdf
    • http://burchettequine.com/uploads/1/3/0/8/130814402/zokesenaremi.pdf
    • http://andersonbikes.com/uploads/1/3/0/4/130436147/bulalosat.pdf
    • http://mrslowesclass.com/uploads/1/3/1/1/131163616/638a1e379e471.pdf
    • http://bfreewellness.com/uploads/1/3/0/8/130814387/kexomizobexit-newaseziw-xiwogum-nejexoliju.pdf
    • http://michaelromig.net/uploads/1/3/0/6/130639533/wulopiforisez-tegeg-gipanuzigu.pdf
    • http://www.notquitechurch.co.uk/uploads/1/3/0/4/130489669/topowugawizukofox.pdf
    • http://www.hhsalcorn.org/uploads/1/3/0/2/130272232/9981527.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/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000971f.bin
8cb259f9c88bf82982a5cd457bb372071e374901556c7b1f8d36cb21408e6de4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x971F 8040 bytes

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