Pdf.Dropper.Agent-8353092-0 — PDF malware analysis

Static analysis result for SHA-256 0efe3c0aef45d2e2…

MALICIOUS

PDF

35.5 KB Created: 2020-05-17 07:50:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 69934dc4f28a3ff2aefb58a6cb259f23 SHA-1: bc4a839856a993a41c3606d54e0cf70cdec8e26d SHA-256: 0efe3c0aef45d2e2c0a5fd1e989ff9e7ed9cacab21983818675fe0db089f978b
196 Risk Score

Malware Insights

Pdf.Dropper.Agent-8353092-0 · confidence 95%

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

This PDF document is identified as a dropper by ClamAV and exhibits a high ML score for maliciousness. It contains a large number of links to external PDF files hosted on various domains, suggesting a link farm or redirection mechanism. The embedded URLs likely serve as a distribution point for further malicious content, potentially leading to the download and execution of additional malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

Heuristics 6

  • 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.
  • ClamAV: Pdf.Dropper.Agent-8353092-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8353092-0
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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://geekpapaya.net/uploads/1/3/0/7/130738526/130738526.html#barcelona+pavilion+mies+van+der+rohe+pdf
    • http://cjsplaypen.com/uploads/1/3/0/5/130588902/e856168dd9b32a.pdf
    • http://carinamerrittportfolioofevidence.com/uploads/1/3/0/3/130313671/dinawowapejulevon.pdf
    • http://quentinkeene.com/uploads/1/3/0/7/130738555/tupofezisuwixojod.pdf
    • http://classiccleaninginc.net/uploads/1/3/1/1/131164319/wogofabufuzoji_togegetejulow_rugexepun_bepuvutape.pdf
    • http://cypressranchaquatics.com/uploads/1/3/1/3/131379198/4263320.pdf
    • http://rickdunnam.com/uploads/1/3/1/8/131857590/9129535.pdf
    • http://prosperitypanties.com/uploads/1/3/1/4/131413222/8f1b3dd.pdf
    • http://langleyhousecleaning.com/uploads/1/3/0/6/130622005/ec097.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_off00005d2e.bin
e2c4474fcd5a0a8b208f438a3517100c0a5b97b8a42d4fd5503ce7bbeb4ebc60		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D2E 11196 bytes

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