Malicious PDF / .VIR — malware analysis report

Static analysis result for SHA-256 6f03705ecba53af9…

MALICIOUS

PDF / .VIR

79.1 KB Created: 2021-03-23 03:21:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2024-06-26
MD5: e15a09bc7bdbd001d710d2a57b66845b SHA-1: d577f67038d51086fed07f5519e16dce36a76597 SHA-256: 6f03705ecba53af9abffb0c28a5f623bac3c14a5f369e7dcb7bf0691addf84f1
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://zifixoribe.scienceontheweb.net/betapo.pdf In PDF document text
    • http://kunepuvobimamin.medianewsonline.com/fapumotajizeg.pdfIn PDF document text
    • https://cdn.sqhk.co/pibilebomek/Ahjjdhg/nail_salon_open_now_las_vegas.pdfIn PDF document text
    • https://s3.amazonaws.com/vinejivunitego/corporate_sustainability_reporting_in_malaysia.pdfIn PDF document text
    • https://s3.amazonaws.com/kakef/fesoxilopujomovusakomon.pdfIn PDF document text
    • https://tewijudejasivi.weebly.com/uploads/1/3/2/6/132682467/karukikav.pdfIn PDF document text
    • https://s3.amazonaws.com/jixerubowi/70559197774.pdfIn PDF document text
    • http://nitafibejuze.mygamesonline.org/acute_glomerulonephritis_pathophysiology.pdfIn PDF document text
    • http://xozowilozoga.mywebcommunity.org/viduguresijizugovotasese.pdfIn PDF document text
    • https://zunexoxefa.weebly.com/uploads/1/3/5/3/135340588/5541159.pdfIn PDF document text
    • https://puziwifatewir.weebly.com/uploads/1/3/4/7/134715637/33aad98.pdfIn PDF document text
    • https://cdn.sqhk.co/jodariwem/oUoxzSN/93089741026.pdfIn PDF document text
    • https://s3.amazonaws.com/kovibu/68594967216.pdfIn PDF document text
    • https://s3.amazonaws.com/widiku/compositions_of_transformations_worksheet_answers_9-_4.pdfIn PDF document text
    • https://cdn.sqhk.co/fojilude/1jje7id/lelozafiruzo.pdfIn PDF document text
    • http://pedaxofanor.mywebcommunity.org/how_much_does_a_assistant_manager_make_at_walmart.pdfIn PDF document text
    • https://s3.amazonaws.com/xewamejixolefaj/7178464936.pdfIn PDF document text
    • https://s3.amazonaws.com/rejiner/c3_life_fitness_exercise_bike_for_sale.pdfIn PDF document text
    • https://s3.amazonaws.com/vuzotisenixava/is_dried_fruit_gluten_free.pdfIn PDF document text
    • https://ponafet.ru/strik?utm_term=big+nate+blow+the+roof+offPDF link annotation
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000e5e4.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000e5e4.bin)
    • http://www.opentle.orgIn extracted file (font_01_sfnt_off0000f764.bin)
    • https://uploads.strikinglycdn.com/files/f9537a1a-05f3-4aa4-8a64-061b7a5e52a4/does_the_red_cross_give_free_cpr_classes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/301483d6-156e-4632-8050-2c6af33a21f1/23320678111.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 extracted file (font_00_sfnt_off0000e5e4.bin)
    • http://www.gnu.org/licenses/gpl.htmlIn extracted file (font_01_sfnt_off0000f764.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e5e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5E4 5132 bytes
SHA-256: e23ed244b154256d0800d2624a5a9351bb372b168acab7028a18c79aa09763b2
font_01_sfnt_off0000f764.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF764 7148 bytes
SHA-256: 2d4a02105b625024ff9d4126acc605e1ffe76bc7d171ff7e8e58ee39eb2e5eb1
font_02_sfnt_off00010ac6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AC6 10436 bytes
SHA-256: a0e66594db2f7fbb9b74601feac7498562d76c3fc13a615860501655bc048afc