Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c2f4d09d65a0f71…

MALICIOUS

PDF

42.0 KB Created: 2020-05-17 01:51:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cd5a14ff2b135f828ff7399d1dbb9d5a SHA-1: e8a0f4d8e9324189666699d86c4d227531cf4ec1 SHA-256: 0c2f4d09d65a0f71a85ce42a5a04ad5ce508a06e8b86758e1a4ec1631a435589
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 are structured as numeric slugs and point to other PDF files, indicating a link farm or SEO manipulation tactic. The ML classifier strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure and numerous external URLs suggest it's designed to redirect users to potentially harmful content or facilitate further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://skinspiritlife.com/uploads/1/3/0/4/130483285/130483285.html#endless+harvest+ielts+reading+answers+key
    • http://dolespersonalizedmemories.com/uploads/1/3/0/8/130814010/zinipuzuza_duwezeru_sugobuso_loboxudog.pdf
    • http://mediaminduae.com/uploads/1/3/0/6/130604935/2554453.pdf
    • http://mangrovepaddling.com/uploads/1/3/0/5/130545096/jonenubonola.pdf
    • http://parlorfloor.com/uploads/1/3/1/4/131437941/tumexizojibif_voxerepukigaxu_rarozab.pdf
    • http://alexbouw.org/uploads/1/3/1/6/131606051/pegapubozimefij.pdf
    • http://juegocentrico.com/uploads/1/3/0/9/130969002/4984723.pdf
    • http://marydubbs.com/uploads/1/3/0/5/130550812/2fc037c274.pdf
    • http://goldenkissmakeup.com/uploads/1/3/0/9/130969037/2257048.pdf
    • http://holoholofuntravel.com/uploads/1/3/1/6/131636627/7165018.pdf
    • http://healthcarerealestate.ca/uploads/1/3/0/7/130776591/5790007.pdf
    • http://rose-annerussell.com/uploads/1/3/1/8/131856242/vobisorazawap-kaluwi-puwid-vujenaveviner.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e00.bin
9dea7760a0bcaac1bd647ebbdedb81d0c5ce06049430a4e341fdfe9803a4312d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E00 18952 bytes

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