Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8a99296f179d521…

MALICIOUS

PDF

42.2 KB Created: 2020-03-10 12:52:44 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: c85b133171804fe7db09d9dc41fd7a06 SHA-1: 90490dc692e79dc4aa541ed521d6ff4f9420c96b SHA-256: b8a99296f179d521d925f19d28c05d55ac540be3daae3275591db0dcef7f3750
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF document contains a large number of external links, suggesting a link farm or redirection tactic. The ML classifier strongly flagged this PDF as malicious. The document body presents a lure related to a bullet train project, likely to entice users to click on the embedded links. No scripts were extracted, but the sheer volume of external links points to a malicious intent to redirect users to potentially harmful content.

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://cpanel.collegedemsatiu.com/uploads/1/3/0/8/130873937/130873937.html#mumbai+ahmedabad+bullet+train+project+contractor
    • http://ncscammers.com/uploads/1/3/0/6/130603745/6358706.pdf
    • http://jurislator.net/uploads/1/3/0/4/130483487/1488959.pdf
    • http://brwsr.sbrsd.org/uploads/1/3/0/6/130620163/773104.pdf
    • http://azamericansaddlebredrescue.org/uploads/1/3/0/6/130620198/pukenajov.pdf
    • http://yavapaifindaride.com/uploads/1/3/0/3/130313605/kumigifejaf.pdf
    • http://www.financialmann.com/uploads/1/3/0/4/130435785/3243495.pdf
    • http://lifecoachofthelowcountry.com/uploads/1/3/0/6/130604859/3173485.pdf
    • http://admin.maximisenetwork.com/uploads/1/3/0/4/130483215/5729626.pdf
    • http://original.vaughan.co.nz/uploads/1/3/0/5/130589227/xixetozig-xexejobifenorox-ladefo-pojel.pdf
    • http://berkshireconstructiongroup.com/uploads/1/3/0/5/130546096/keroxijejovedix.pdf
    • http://newdealplan.com/uploads/1/3/0/8/130874674/refogewogunixiru.pdf
    • http://hydrodigitalfilms.com/uploads/1/3/0/5/130590698/bobosinibi.pdf
    • http://partnersinrelief.com/uploads/1/3/0/7/130776338/kituzenurika_bulukade_turarobarixed_dimofezeg.pdf
    • http://zajic.family/uploads/1/3/0/3/130379213/wofasaxokifexamemu.pdf
    • http://collingwoodtherapy.com/uploads/1/3/0/6/130639461/malejeje.pdf
    • http://www.anncruzconsulting.com/uploads/1/3/0/7/130776756/630356.pdf
    • http://weeklyflowcase.com/uploads/1/3/0/7/130740084/radepisixi_jejefidel_vagak.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_off00007a07.bin
08a0e8f8fad9997a4bbce4b94902caa5e15c2c5928ba0e1ad0106d56d61ed226		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A07 8120 bytes

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