Malicious PDF — malware analysis report

Static analysis result for SHA-256 665ae9531da11aff…

MALICIOUS

PDF

49.2 KB Created: 2020-03-30 03:45:18 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 0dad8139e76b2a1097436d857ae01ca9 SHA-1: dd89c6c721ca5b3a5550839f08eedd7ecb0d3a14 SHA-256: 665ae9531da11aff2e76e10b26253a4a15965c892eab313baf811e9e0203d362
96 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links to external websites, a technique often used for SEO spam or to distribute malware. The ML classifier strongly indicated maliciousness, and the PDF_SEO_LINK_FARM heuristic identified a mass of external links. While no scripts were directly extracted, the embedded links suggest an intent to redirect the user to potentially 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://hall-elopement.rominastiebenphotography.com/uploads/1/3/0/6/130604515/130604515.html#te+adorare+letra+ricardo+montaner
    • http://4100expressave.com/uploads/1/3/0/4/130476539/51e7fb.pdf
    • http://protocolclub.net/uploads/1/3/0/6/130605521/24f2976015d5.pdf
    • http://firstroboticsu.com/uploads/1/3/0/7/130776503/8263875.pdf
    • http://gigsterhub.com/uploads/1/3/0/3/130313140/mibumabupu.pdf
    • http://smalltalkchesco.com/uploads/1/3/0/3/130379514/tipovit.pdf
    • http://roly-world.com/uploads/1/3/0/6/130640081/69b1f385.pdf
    • http://ukswsc.com/uploads/1/3/1/3/131398479/2875f303.pdf
    • http://meaningfullifework.com/uploads/1/3/0/8/130874683/4578082.pdf
    • http://b2beautifulcopywriting.net/uploads/1/3/1/3/131398279/4977077.pdf
    • http://woodenspoondesserts.com/uploads/1/3/0/5/130588762/jibisodanaj.pdf
    • http://fhsproductions.com/uploads/1/3/0/7/130775825/muvulezevuziwelu.pdf
    • http://frogdogboutique.com/uploads/1/3/0/9/130968950/9416989.pdf
    • http://bb-horses.ch/uploads/1/3/0/8/130814483/dutezewuxe_pisumozidanaxat_wisumupupa_jegutomi.pdf
    • http://ice4pros.com/uploads/1/3/0/6/130604448/9064385.pdf
    • http://ctsolit.com/uploads/1/3/0/4/130436473/guwan.pdf
    • http://keinplanetb.com/uploads/1/3/0/7/130739782/dabedope_sowegovosupob_noxobo_runavodigofulo.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/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007401.bin
08ef3a84740777242d76fd6e6f0f37a4207ca1550279b10e636063e634dd937b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7401 9472 bytes
font_01_sfnt_off00009660.bin
d01ef4ef3523f0328a4da44ca108f0ff0e976d425900a3e576a14baab4fe44c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9660 1812 bytes
font_02_sfnt_off00009f59.bin
22cd034339abe83ef100088c344c397d43dbcb1a696a587bbc5f11ca204a751f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9F59 16204 bytes

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