Malicious PDF — malware analysis report

Static analysis result for SHA-256 2083be2031328bd0…

MALICIOUS

PDF

69.0 KB Created: 2021-02-15 09:51:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 9409b402ba7bdda391f38f6e97d71e1f SHA-1: dbe80c6e1fd0ce057c42b59a4ef1008966548a49 SHA-256: 2083be2031328bd053fe9672e4ff07b412673273dfd79f66cb3d455f4d25fcf8
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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 https://jacksth.ru/wix?keyword=formulas+and+oxidation+numbers+lab+answers PDF link annotation
    • http://rasezinetoge.iblogger.org/acrobat_reader_x.pdfIn PDF document text
    • http://yyyyyyhhhhh.space/aiag_apqp_formatshd4zs.pdfIn PDF document text
    • http://romeoplanet.club/bezakor2fmej.pdfIn PDF document text
    • http://vibigobefe.22web.org/reporting_mann_whitney_u_test_in_text.pdfIn PDF document text
    • http://svoylend.xyz/21309193680580rx.pdfIn PDF document text
    • https://xaxafojub.weebly.com/uploads/1/3/0/7/130738676/narojomujetebikumus.pdfIn PDF document text
    • https://fitokuzigijot.weebly.com/uploads/1/3/4/6/134681543/1589584.pdfIn PDF document text
    • http://akfb.online/what_a_wonderful_world_piano_sheet_md9lbm.pdfIn PDF document text
    • https://nuvisinuxaxo.weebly.com/uploads/1/3/1/3/131383681/1a8373b267fdc.pdfIn PDF document text
    • http://coolstudent.space/2903718880yx1gy.pdfIn PDF document text
    • https://jetesobamu.weebly.com/uploads/1/3/5/3/135323438/9347999.pdfIn PDF document text
    • http://disclosures.space/6939808947n6pk9.pdfIn PDF document text
    • https://buxijoxusezo.weebly.com/uploads/1/3/1/4/131483018/9ef156a2.pdfIn PDF document text
    • http://b0xberry.online/asi_hablaba_zaratustra_federico_nietzscheatukr.pdfIn PDF document text
    • https://divuvefa.weebly.com/uploads/1/3/4/7/134759037/vugiru_nowix_nojopufinomogib_bomedogujape.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bifuganikidaliv.epizy.com/kagojidipibovitij.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d177.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD177 5224 bytes
SHA-256: 3437ee948184fe19723822d23d946a952f26bee7a546afebd4a7f96f24bc296a
font_01_sfnt_off0000e333.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE333 10452 bytes
SHA-256: a879ba26f6695f665ded4115c2db05170d8e0dcbb7a50b9db364a7d388d2ffcc