Malicious PDF / .VIR — malware analysis report

Static analysis result for SHA-256 28926811291710de…

MALICIOUS

PDF / .VIR

404.0 KB Created: 2023-03-01 12:02:07 Authoring application: Adobe PDF Library 9.0 First seen: 2024-04-14
MD5: 7560c89669d2c898865214cf819ad92e SHA-1: 5aad3ee96cf76cb813505516da897ad3b6505fed SHA-256: 28926811291710de9ba786a9b90ec2f97f1ae074257c48fd3f9626dcdcfffc1e
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF employs parser evasion techniques and contains multiple embedded URLs, one of which, 'https://mrs-dalloway-pdf.bolojujuve.sbs/joradupuvoxa.pdf', is flagged as suspicious and likely leads to a malicious payload. The document body and heuristics suggest a lure to download further malicious content, masquerading as legitimate documents.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9548

Heuristics 5

  • Viral-video clickbait PDF links to suspicious host critical SE_VIRAL_VIDEO_CLICKBAIT_LINK
    Document uses viral/leaked-video lure text and links to a suspicious disposable-looking web host. This is a clickbait/traffic-scam carrier shape rather than a benign PDF link.
  • Clickable PDF combines external action with parser-evasion structure high PDF_ACTION_PARSER_EVASION
    PDF has an external clickable URI together with object graph or xref structures that make parsers disagree, such as divergent duplicate objects, parser divergence, or xref offset mismatch. That combination is stronger than a plain link: the document is both an outward-action carrier and a parser-confusion/evasion sample.
  • 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://vw-jetta-tdi-service-manual-pdf.diveaway-fiji.com/zef.pdf In PDF document text
    • https://geotechnical-engineering-principles-and.dijafatuko.cfd/6775648.pdfIn PDF document text
    • http://adservice.google.co.ug/ddm/clk/445204615;249060672;c;;%3F//electricidad-y-magnetismo-pdf.beachweddingsinmiami.com/4623134.pdfIn PDF document text
    • http://adservice.google.co.ao/ddm/clk/295204063;122181591;w;;%3F//global-health-101-3rd-edition-pdf.d2t.ink/6342351.pdfIn PDF document text
    • https://chicka-chicka-boom-boom-font.tripleb-ent.com/5706777.pdfIn PDF document text
    • http://human-figure-anatomy-drawing-pdf.freesaintpierreandmiquelon.com/susifogugomiviv.pdfIn PDF document text
    • https://adservice.google.com.ni/ddm/clk/300948314;127869103;e;;%3F//img1.wsimg.com/blobby/go/024e43a4-5829-45f9-aadb-9f446f89ae19/downloads/vekekasakokijutama.pdfIn PDF document text
    • http://romiette-and-julio-study-guide-answers.gasinicor.com/fivo.pdfIn PDF document text
    • http://adservice.google.com.sb/ddm/clk/426382440;228185261;d;;%3F//8-7-study-guide-and-intervention-answers.i3op.org/321.pdfIn PDF document text
    • https://mrs-dalloway-pdf.bolojujuve.sbs/joradupuvoxa.pdfIn PDF document text
    • https://adservice.google.com.bd/ddm/clk/424929466;226923624;r;;%3F//pekod.oldtimersclocks.com/338.pdfIn PDF document text
    • https://adservice.google.is/ddm/clk/424929466;226923624;r;;%3F//img1.wsimg.com/blobby/go/415cb031-37b5-48c9-9576-4aa16bca7e90/downloads/sample_cv_for_scholarship.pdfPDF link annotation
    • http://adservice.google.co.za/ddm/clk/310682673;138356009;g;;%3F//vmware-user-manual-pdf.reallygreattrust.com/271.pdfIn PDF document text
    • http://adservice.google.mg/ddm/clk/424929466;226923624;r;;%3F//mewagufi.contractowl.com/386.pdfIn PDF document text
    • http://adservice.google.dm/ddm/clk/295204063;122181591;w;;%3F//a-gift-from-the-goddess-pdf.seryusmedia.com/715.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/4ca7da89-b4dc-4acd-bdd1-398337807d41/downloads/vejuwilatu.pdfIn PDF document text
    • https://adservice.google.se/ddm/clk/300948314;127869103;e;;%3F//img1.wsimg.com/blobby/go/c40d7665-6cc0-48c4-9ce9-768716e7ab1a/downloads/jekajad.pdfIn PDF document text
    • http://adservice.google.si/ddm/clk/478229754;284365575;c;;%3F//spanish-1-final-exam-study-guide-answer.3sixtyanalytics.global/xusinerolavatox.pdfIn PDF document text
    • https://adservice.google.ae/ddm/clk/408405163;208572896;n;;%3F//oracle-database-12c-student-guide-vol-1.suprlvl.de/45.pdfIn PDF document text
    • https://adservice.google.be/ddm/clk/448794861;252804937;a;;%3F//img1.wsimg.com/blobby/go/5b7ab196-645d-4854-87d4-bec8377739e3/downloads/53689446938.pdfIn PDF document text
    • https://adservice.google.so/ddm/clk/310682673;138356009;g;;%3F//zinebaf.lakenakara.com/42.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/bb79e11b-cfa0-4108-986d-3b5451e9fbc9/downloads/tactics_for_listening_basic_free_download.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://dejavu.sourceforge.netIn extracted file (font_00_sfnt_off00060e0c.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00060e0c.bin)

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00060e0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60E0C 19292 bytes
SHA-256: efd15f1df28061e1c024c0cfdbe974c73fc2928b03e829e345f0eaa1317b2818