Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed6ea073d2247bbc…

MALICIOUS

PDF

39.1 KB Created: 2020-07-01 02:57:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-24
MD5: 11446adca0cef329cb61b97d2e919cce SHA-1: 73e4bb21be6504134e182b5573eeeabc1f58b9e0 SHA-256: ed6ea073d2247bbc53eb9972abc7186a528f6529d1a239591a4330d0f6db6fff
96 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The ML classifier also strongly indicated maliciousness. The document body contains text and URLs that appear to be part of a link farm, aiming to direct users to numerous other PDF files hosted across various domains. This suggests a tactic to manipulate search engine results or distribute potentially malicious content through a wide network of sites.

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://limosmontgomerycounty.com/uploads/1/3/0/8/130814245/dofanigupapukiv_watasunabirij_dogewuluwore_nalimudafame.pdf In PDF document text
    • http://bythehourmedia.com/uploads/1/3/0/5/130550931/38cc1b8.pdfIn PDF document text
    • http://ilceperot.com/uploads/1/3/0/5/130541208/a71d6.pdfIn PDF document text
    • http://rexargento.com/uploads/1/3/0/6/130604723/4175fdff429c182.pdfIn PDF document text
    • http://kolbe-press.com/uploads/1/3/0/2/130288887/tulewafikero.pdfIn PDF document text
    • http://cleekhcomm2034su19.com/uploads/1/3/0/8/130874326/vepesiwuz_bojijuze_mirukif.pdfIn PDF document text
    • http://theabandonedcollective.com/uploads/1/3/1/0/131071277/6766810.pdfIn PDF document text
    • http://webdisk.auerservis.com/uploads/1/3/0/8/130814346/8347381.pdfIn PDF document text
    • http://yesterdayscnc.com/uploads/1/3/0/4/130489143/labesav_sirolusifebe_mipubaxijil_belenotode.pdfIn PDF document text
    • http://uol.graysbooks.com/uploads/1/3/1/3/131380889/vixomerigudinir.pdfIn PDF document text
    • http://chateauneufdupapewineclub.net/uploads/1/3/0/2/130288579/zobuwabilonebi.pdfIn PDF document text
    • http://livinginfaithandfitnesseveryday.com/uploads/1/2/9/4/129430316/129430316.html?aventurasIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://files.lane.people.ua.edu/uploads/1/3/1/8/131858530/131858530.html#brute+force+data+ps3PDF link annotation
    • https://wadedala728945907.files.wordpress.com/2020/07/jazenikumawomemedededa.pdfIn PDF document text
    • https://liwibemog.files.wordpress.com/2020/06/18672296506.pdfIn PDF document text
    • https://sexepik.files.wordpress.com/2020/06/30570327730.pdfIn PDF document text
    • https://negowonot.files.wordpress.com/2020/06/16035548414.pdfIn PDF document text
    • https://lotodirod.files.wordpress.com/2020/06/8750828070.pdfIn PDF document text
    • https://tomozajip.files.wordpress.com/2020/06/6949238869.pdfIn PDF document text
    • https://turepiw.files.wordpress.com/2020/06/25579981552.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 7

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005a9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A9E 5056 bytes
SHA-256: 2fcd37cc9c0338c07fb5a53c1dcde18d9cc03d98e927920fcd69865e03a29274
font_01_sfnt_off00006be5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BE5 10360 bytes
SHA-256: a14721792de106c5ae0a0314b3b9eace7c96c6c5b7a6b64aa4c9e7a7d239d498

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