Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6fef2e4edd1a4d3…

MALICIOUS

PDF

30.2 KB Created: 2020-05-25 22:59:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e48ff0ec04fb9bb9e6b3916a0fead35d SHA-1: 3614ee04bc21ccec31fee2a411222532079f3607 SHA-256: e6fef2e4edd1a4d3e7eaa9ff827d384fcce98d309d98e9000f3bd8645a1ed8aa
96 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which are dynamically generated and point to seemingly unrelated domains, indicating a link farm or SEO poisoning tactic. The ML classifier strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains URLs that are likely used to redirect users to malicious content or download further payloads.

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://0nedr1ve.com/uploads/1/3/1/4/131437987/131437987.html#singer+tradition+2277+manual
    • http://prekmathematics.org/uploads/1/3/0/7/130775760/855cf1bed.pdf
    • http://emweebedrijfsdiensten.nl/uploads/1/3/0/6/130604642/95885101.pdf
    • http://catherinegreer.com/uploads/1/3/1/3/131383045/9016383.pdf
    • http://starbagsptsd.com/uploads/1/3/0/5/130550683/3346493.pdf
    • http://bboom.space/uploads/1/3/0/2/130273850/segewufasulawu_pewimine_zixadogonu.pdf
    • http://esslermontana.com/uploads/1/3/0/2/130291492/ba8286013fa38.pdf
    • http://tlc-la.com/uploads/1/3/0/2/130291544/e507bcd.pdf
    • http://insideout.pro/uploads/1/3/0/6/130639590/7834361.pdf
    • http://nokaoiconstructionhawaii.com/uploads/1/3/0/4/130489669/be8c1d0.pdf
    • http://shawsxvisuals.com/uploads/1/3/1/4/131452880/7962123.pdf
    • http://triangleeastrealty.com/uploads/1/3/0/5/130551714/4662599.pdf
    • http://cpcontacts.ecocare.co.za/uploads/1/3/0/5/130542734/bawanirem_lafegekodikuxex.pdf
    • http://cpanel.rowdygainesmastersclassic.com/uploads/1/3/0/4/130489997/a59c51e2f.pdf
    • http://roweatononline.com/uploads/1/3/0/6/130603983/pavijipuxe.pdf
    • http://lolastreatstop.org/uploads/1/3/0/6/130620568/1842106.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_off00004b83.bin
8767bb95b7df304b92abb8e63144f19072231546f12f573fc7ed9d74dab2f7ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4B83 10032 bytes

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