Malicious PDF — malware analysis report

Static analysis result for SHA-256 049593f99d6cd9bb…

MALICIOUS

PDF

31.3 KB Created: 2020-04-28 10:53:57 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 97cd4ab85d4d27461d72386620731fa3 SHA-1: 39566fa96b2cafe1826552289b2fdaf42dbd81f4 SHA-256: 049593f99d6cd9bbe9cd05ebaddda1c93e4a3bf3238af559b61e8676fb9664d7
96 Risk Score

Malware Insights

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

This PDF file exhibits characteristics of a link farm, with numerous embedded URLs pointing to external domains. The heuristic 'PDF_SEO_LINK_FARM' specifically indicates a large number of external PDF links, suggesting an attempt to manipulate search engine results or redirect users to potentially malicious content. While no scripts were directly extracted, the presence of many external links and the ML classifier's high confidence score point towards a malicious intent to redirect users. The document body contains garbled text mixed with URLs, further supporting the link farm hypothesis.

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://iglootw.com/uploads/1/3/1/4/131453449/131453449.html#anniversary+songs+in+tamil
    • http://beautyflower.info/uploads/1/3/0/4/130435611/2563918.pdf
    • http://turnkeysolutions.services/uploads/1/3/1/4/131482907/kapivevajan_jokorawavanosum_mudenolid.pdf
    • http://calplastics.us/uploads/1/3/1/6/131636753/deroliboso.pdf
    • http://ikj-online-demo.com/uploads/1/3/0/8/130873776/692e9d406de7.pdf
    • http://bitfiniti.com/uploads/1/3/0/6/130604521/82db72ae5ee.pdf
    • http://grazianomacaronicompany.com/uploads/1/3/0/5/130590438/nesipanovasexe.pdf
    • http://bigsistersstudio.com/uploads/1/3/0/4/130483474/7388516.pdf
    • http://wildturkeybar.com/uploads/1/3/0/2/130287462/91942484ead0.pdf
    • http://toplinekitchencabinetsinc.com/uploads/1/3/0/6/130639347/3268293.pdf
    • http://ottoorganics.com/uploads/1/3/0/4/130483253/9389760.pdf
    • http://mail.twinwatershealing.net/uploads/1/3/0/2/130272234/106075.pdf
    • http://smithgamecalls.com/uploads/1/3/0/6/130605447/8bf234bc37a39.pdf
    • http://yourparalegalhelpdesk.com/uploads/1/3/1/3/131378840/dudabubewopaso-tuzumom-jotok-lovolaxupif.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_off000053ee.bin
3f9e8e863e11ae37d6992df9a02e833199d947c88aeee4038c1b9c735cfeab58		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53EE 7452 bytes

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