Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c14a1aed2e6a90d…

MALICIOUS

PDF

47.1 KB Created: 2020-03-11 08:17:13 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: f07de6d4d4aa949e1892b9398e73cc85 SHA-1: 0d36c60afd1443c2b279d2717db050817c3c03af SHA-256: 1c14a1aed2e6a90d14d332784664fbb8f2c8e389bf84c4b2a5c5c1dd1ef924e4
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of external links to other PDF files hosted on various domains. This pattern is indicative of SEO poisoning or a link farm designed to distribute malicious content or drive traffic. The ML classifier strongly supports the malicious verdict.

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://www.khensofong.com/uploads/1/3/0/4/130476407/130476407.html#accord+adjectifs+couleur+exercices+cm2
    • http://www.davepaco.com/uploads/1/3/0/5/130544034/devufunifubi.pdf
    • http://homeworksbydaneker.net/uploads/1/3/0/5/130588858/493287dcfb7e.pdf
    • http://mta-sts.kanafanimarmi.com/uploads/1/3/0/2/130288818/guzazi.pdf
    • http://www.cantonchurches.org.uk/uploads/1/3/0/7/130739561/ditalejev.pdf
    • http://swellbathrooms.com/uploads/1/3/0/2/130288798/04f36fb07fc5.pdf
    • http://tlcskilledcareinc.com/uploads/1/3/0/6/130620847/biropususedo.pdf
    • http://swop-phoenix.org/uploads/1/3/0/6/130639621/185ea794f.pdf
    • http://shoplocketsandlaceboutique.com/uploads/1/3/0/6/130622007/razepisat-dufalidon-xidififo.pdf
    • http://partywife.net/uploads/1/3/0/3/130323220/3996909.pdf
    • http://www.groundedbygracechristiancounseling.com/uploads/1/3/0/7/130740217/rofuwat-mexalekakutu-punafatubomujam.pdf
    • http://geek-ishthings.com/uploads/1/3/0/4/130475921/4262329.pdf
    • http://retrotri.com/uploads/1/3/0/5/130545484/toguniboganuxumudu.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007044.bin
b02033a0f125f563bb2bac4abc2041b9c8aa890963f30f92e76803f9f48dda1b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7044 10104 bytes
font_01_sfnt_off00009329.bin
d8029ef5071e465a961c05ba2fbcec4eeae56bb6bb02a2d1203d7f92220b2ba2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9329 17436 bytes

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