Malicious PDF — malware analysis report

Static analysis result for SHA-256 2eae1a71e563f879…

MALICIOUS

PDF

34.2 KB Created: 2020-06-03 14:02:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 29fe13351cb9fcba0f0ab6a1d5250e16 SHA-1: 84402e4f715ce7a0c1f470351d9f936330a26380 SHA-256: 2eae1a71e563f8795f2696e69bfc8c1c760b84dcf35b4208fe4e43ece401d496
96 Risk Score

Malware Insights

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

The PDF document contains numerous external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or phishing attempt. The document body, though partially corrupted, contains text related to 'Cartera de vacunacion imss' (IMSS vaccination record), which is likely a lure to entice users to click on the embedded malicious URLs. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://webdisk.justanothersunday.com/uploads/1/3/1/3/131397973/131397973.html#cartera+de+vacunacion+imss
    • http://harmonyhealingtherapies.net/uploads/1/3/1/3/131379643/nevesuwavuwa.pdf
    • http://checkforcoloncancer.com/uploads/1/3/0/5/130551144/31a878db.pdf
    • http://spreadtheloveforturtles.com/uploads/1/3/0/8/130813516/bevigever.pdf
    • http://coloradocommunitycompost.com/uploads/1/3/1/3/131398125/wowamapedakamu.pdf
    • http://onlyhave.com/uploads/1/3/0/4/130490602/9443560.pdf
    • http://austinaviationassociates.com/uploads/1/3/1/8/131858540/315d57041228.pdf
    • http://kurekit.com/uploads/1/3/0/4/130488935/mojebitobebopituwamo.pdf
    • http://lwusa.com/uploads/1/3/0/5/130550981/d3aa07.pdf
    • http://webdisk.justanothersunday.com/uploads/1/3/1/3/131397973/terms.html
    • http://webdisk.justanothersunday.com/uploads/1/3/1/3/131397973/dmca.html
    • http://webdisk.justanothersunday.com/uploads/1/3/1/3/131397973/policy.html
    • https://kajunomifoj.files.wordpress.com/2020/05/rugezirol.pdf
    • https://vurizuzuni.files.wordpress.com/2020/06/koronumaliridomasovow.pdf
    • https://gunurineso.files.wordpress.com/2020/05/91934239322.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_off00005925.bin
21d5fbdaee04e8a2f37402158e802bfcbcc171cfd285022c7a30f0dda1a41731		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5925 10776 bytes

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