Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b3b590259a89474…

MALICIOUS

PDF

38.4 KB Created: 2020-03-29 06:37:34 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 522d0af0fdecc3796b2a3b8e64bd230f SHA-1: 79d691a7be09ac75a00a050b7cbf94fb6878f87b SHA-256: 7b3b590259a894749aa825015f43f4290db44e834cd2f44639f362d07b235d29
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1105 Ingress Tool Transfer

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. The ML_NYX_PDF_MALICIOUS classifier also flagged this file with high confidence. The embedded URLs suggest a link farm or SEO manipulation tactic, potentially leading to malicious content or phishing pages.

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://colddiamnd.com/uploads/1/3/1/3/131380337/131380337.html#tener+que+vs+hay+que+ejercicios
    • http://oregonhomesandranch.com/uploads/1/3/0/2/130272921/rotetuvozo.pdf
    • http://annachojnacka.nl/uploads/1/3/0/7/130775918/nidaji.pdf
    • http://www.dilleybiblechurch.org/uploads/1/3/0/8/130814298/lazor.pdf
    • http://techwaysolutionsg.com/uploads/1/3/0/2/130287407/4453245.pdf
    • http://illuminationofself.com/uploads/1/3/0/6/130621179/7484757.pdf
    • http://myphotographybyjess.com/uploads/1/3/0/7/130775619/3512022.pdf
    • http://hostmaster.thewoolproject.com/uploads/1/3/0/5/130550721/b5182.pdf
    • http://chiomegamidland.com/uploads/1/3/0/6/130621461/30406a2f5.pdf
    • http://lcosdisplays.com/uploads/1/3/0/4/130477584/paguzof.pdf
    • http://opulencespa.net/uploads/1/3/0/7/130776085/3158921.pdf
    • http://kbhlawyers.com/uploads/1/3/0/9/130969603/sasemiwomotisopoduxo.pdf
    • http://six18gfx.com/uploads/1/3/0/5/130588442/1017369.pdf
    • http://www.fayettevilleveterinarian.com/uploads/1/3/1/0/131070761/2330579.pdf
    • http://huraworld.com/uploads/1/3/0/8/130814248/karedeso.pdf
    • http://groupejgs.be/uploads/1/3/0/4/130476669/kebaven.pdf
    • http://truebaggage.com/uploads/1/3/0/9/130969768/munesipawegalesa.pdf
    • http://instituteghana.com/uploads/1/3/0/2/130270979/63618d8.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_off00006bcf.bin
564c847f948aad68a2605fae53bccadf7cf8fba9b94422b7c2eff894d984802b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BCF 8428 bytes

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