Malicious PDF — malware analysis report

Static analysis result for SHA-256 06511720c614fd30…

MALICIOUS

PDF

60.9 KB Created: 2020-03-24 01:56:05 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: e45b68e7fb231257b7e3b103c016c778 SHA-1: de107100abd822a0d325e9ef411308c818c117e7 SHA-256: 06511720c614fd30a4c2fd328e579244842a25672b5e75a510e2d2f2833aa8c5
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 point to other PDF files with numeric slugs, indicating a link farm or SEO spamming operation. The document body, though heavily obfuscated, contains a URL that is also present in the heuristics. The ML classifier strongly flagged this PDF as malicious, suggesting it is designed to redirect users to potentially harmful content.

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://eileanjewellery.com/uploads/1/3/1/0/131070591/131070591.html#el+santo+rosario+a+las+animas+del+purgatorio
    • http://nemozsun.com/uploads/1/3/0/6/130639313/5433440.pdf
    • http://fastrooster.com/uploads/1/3/0/5/130544413/vujatotivagezixetofa.pdf
    • http://www.cambiadentallab.com/uploads/1/3/0/6/130639549/28c78807.pdf
    • http://abcphoenix.com/uploads/1/3/0/4/130477882/xejidumomexowu_pebator_xenal.pdf
    • http://breenbooks.com/uploads/1/3/0/3/130313191/loxilokiw-surigazoto-tegiwija.pdf
    • http://goss-p.com/uploads/1/3/0/6/130621094/1501981.pdf
    • http://nimbledataanalytics.com/uploads/1/3/0/6/130621006/vixokopasuzeto.pdf
    • http://www.brmarkgregory.com/uploads/1/3/0/5/130543663/welenufezume_zuketipakif_fufezoji_leninumofobelum.pdf
    • http://covagurl.com/uploads/1/3/0/7/130739889/42adb75459f1.pdf
    • http://smallplanet.com.au/uploads/1/3/0/8/130873784/poworupem.pdf
    • http://katerinakarpen.com/uploads/1/3/0/6/130620237/17c3222.pdf
    • http://lundyslifehacks.com/uploads/1/3/0/2/130272414/b6f6528c4d2df3e.pdf
    • http://www.keren-s.com/uploads/1/3/0/5/130545043/fogabufavuwoxal-vivujeb-mikorobawefe.pdf
    • http://www.hoftenlaere.net/uploads/1/3/0/3/130313610/zobege_tosolovagat_revoxojupato_gegunikuxof.pdf
    • http://327seventhst.com/uploads/1/3/0/4/130492229/4528df73f92d9.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_off0000c3da.bin
b3a12f4d3480d6e10180e2cce2e66a286582780ac40dc88d6e3dc4127314e869		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC3DA 9584 bytes

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