Malicious PDF — malware analysis report

Static analysis result for SHA-256 362c8826677025c3…

MALICIOUS

PDF

37.8 KB Created: 2020-03-13 12:24:13 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 1a60f0942977295a97a5059144970485 SHA-1: aa11547f934e67dec95c4980c14a81f8b9297291 SHA-256: 362c8826677025c3a3472d80a76459605b49c14cb53d2fd3296ae31d88fdf84d
94 Risk Score

Malware Insights

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

The PDF_SEO_LINK_FARM heuristic indicates this file is part of a link farm, containing numerous external links to other PDF documents. The ML_NYX_PDF_MALICIOUS classifier also flagged this file with high confidence. The embedded URLs point to various domains, suggesting a distribution mechanism for further malicious content or phishing attempts.

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://adsl-63-204-18-17.benefitplans.org/uploads/1/3/0/4/130476188/130476188.html#sea+animals+pencil+drawing
    • http://untetheredroots.com/uploads/1/3/1/0/131069874/xavaxixar.pdf
    • http://www.living-ceremony.com/uploads/1/3/0/5/130540063/6d5f891688.pdf
    • http://megankinchen.com/uploads/1/3/0/5/130551073/venusasimilule-tutibalalar-jokogoxebo.pdf
    • http://www.visionsofadventure.com/uploads/1/3/0/2/130270923/nodigeveninebur.pdf
    • http://awesomeroofcleaning.net/uploads/1/3/0/8/130874224/e5c08f894d.pdf
    • http://ohigholifedesigns.shop/uploads/1/3/0/4/130483349/db687c.pdf
    • http://sgiindia.us/uploads/1/3/0/9/130969204/tonelipexuz_sezusir.pdf
    • http://householdgenius.com/uploads/1/3/0/7/130775123/redebexekikesido.pdf
    • http://learning-sciences.com/uploads/1/3/0/4/130435556/joxinojuzewo_tisoxabi.pdf
    • http://valkyriearmory.com/uploads/1/3/0/6/130604074/sivixodesorune_zumujalebiwaki_bugajumavulezuz_vigesapo.pdf
    • http://mewch.io/uploads/1/3/0/8/130814960/ratukixifigupup.pdf
    • http://denverautoquote.com/uploads/1/3/0/6/130639746/xomulo_figutemurofure_jekowonipefod_fapuxobib.pdf
    • http://australianinteriorsdesign.org/uploads/1/3/0/2/130287284/dokelesonejujubuz.pdf
    • http://valetcreditrepair.com/uploads/1/3/0/7/130775017/tapegonomazegixogisa.pdf
    • http://washingtonchoice.org/uploads/1/3/0/5/130590555/5881398.pdf
    • http://bradleysteelbuilding.com/uploads/1/3/0/6/130604588/moxawidut_jixirimobukevi_nagukus.pdf
    • http://reelandscreen.com/uploads/1/3/0/7/130775531/2741384.pdf
    • http://www.pomecconsulting.com/uploads/1/3/0/7/130775098/karizimajagikat-runeg-niputezolis.pdf
    • http://muttsociety.com/uploads/1/3/0/5/130543305/topuposofelufode.pdf
    • http://chapadaveadeirosturismo.com/uploads/1/3/0/6/130639613/dajidekadapazuv.pdf
    • http://shumworks.com/uploads/1/3/0/3/130324027/gisibuwifunus.pdf
    • http://mantaraypools.com/uploads/1/3/0/5/130588289/33aa28f9f.pdf
    • http://mantaraypools.com/uploads/1/3/0/5/130588289/
    • 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_off00006d0c.bin
4c56cb99c21327dee92c170ed8264fab1a22276aa432fb6beaf000b77d80ed64		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D0C 7248 bytes

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