Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ec984c8616331bb…

MALICIOUS

PDF

75.7 KB Created: 2021-04-08 21:10:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 3833c7f5d740452af951d97217807b88 SHA-1: 625e56840f79c5d51d27df20505d90ca44661ce1 SHA-256: 1ec984c8616331bbba6d1048c189146c3697e7135896e50d1ec27671b3d44d33
96 Risk Score

Malware Insights

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

The file is a PDF document that contains a lure related to using a jump starter, likely to trick the user into visiting a malicious URL. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded URL points to a suspicious domain, suggesting a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://golowaki.ru/strik?utm_term=how+to+use+a+jump+starter PDF link annotation
    • http://cherrypimp.online/runescape_bronze_smithing_guideof48c.pdfIn PDF document text
    • http://xepewifub.mygamesonline.org/19716452633.pdfIn PDF document text
    • http://kemedejovon.getenjoyment.net/biology_project_on_human_heart.pdfIn PDF document text
    • http://mafejaruvoje.sportsontheweb.net/34689155293.pdfIn PDF document text
    • http://sushibara.net/friedberg_linear_algebra_5th_editiont7hb3.pdfIn PDF document text
    • http://koreanluxe.com/51884521782ohi13.pdfIn PDF document text
    • http://povonuzakor.22web.org/60411430902.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://juwovumul.rf.gd/rasomiwinabatosakepi.pdfIn PDF document text
    • https://b32521b7-32ca-447e-9967-d27d0dce683d.filesusr.com/ugd/800b88_7699042eea8c472a9dff9c4a62ad1506.pdf?index=trueIn PDF document text
    • https://6d1a2d78-ebd2-4140-94a0-411197be5b5f.filesusr.com/ugd/88ff89_f4410f0f7b4049099dedccb56821bdca.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/girilifawuxi/brother_mfc_8480_drum_reset.pdfIn PDF document text
    • https://s3.amazonaws.com/najubu/80513199647.pdfIn PDF document text
    • http://vobipufagogo.epizy.com/mexuroxaxe.pdfIn PDF document text
    • https://s3.amazonaws.com/vukujidor/77873792245.pdfIn PDF document text
    • http://pumusejori.epizy.com/cursive_writing_for_3rd_grade_worksheets.pdfIn PDF document text
    • https://6a9ecc2b-05c3-4056-8705-773ae6be8cdd.filesusr.com/ugd/7a359d_76a7ae543ffe48d0a06f140df9871209.pdf?index=trueIn PDF document text
    • https://6a24fdd2-d4a5-4c4b-882b-0f3115751bcf.filesusr.com/ugd/04e6f9_f19f9ebd666b446e9132174746e03803.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tuxexi/80261743.pdfIn PDF document text
    • http://kaloruligot.onlinewebshop.net/apostila_de_administrao_de_empresas_em.pdfIn PDF document text
    • https://48cc712b-de5e-493e-a198-f8962849e22b.filesusr.com/ugd/d2751c_b01a44e356664c86906360f494933ec9.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bodajaku/assistive_touch_for_android_apk.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_off0000eb24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB24 5060 bytes
SHA-256: 65dcee858b4c00da065b44138384bb72fd040d7a8e73c6fcc0a9d3ba19e668db
font_01_sfnt_off0000fc54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC54 10876 bytes
SHA-256: 9a75fbd78f523000f24a97fac2fdcad6b9055e5cce302ec7f90afeffc6943bba

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