Malicious PDF — malware analysis report

Static analysis result for SHA-256 be92122b1707e41c…

MALICIOUS

PDF

85.5 KB Created: 2021-04-28 17:58:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3001ae2b5bbe745d20afe1acb4a44530 SHA-1: d68db64dcf0e9c26ee4af0467a59c1dfc8b505bb SHA-256: be92122b1707e41c889d9833ec51cac18a055b5ed47713a3a75c07a5e271aa8b
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including ClamAV and an ML classifier, indicating it is likely a phishing or malware distribution attempt. The PDF contains a large number of external links, suggesting a link farm or redirection mechanism to malicious sites. The presence of embedded URLs and the PDF_SEO_LINK_FARM heuristic strongly suggest the intent is to direct users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • 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://vilenefex.ru/strik?utm_term=ivermectina+de+animales+para+humanos
    • https://mugifafuvutasij.weebly.com/uploads/1/3/4/1/134108805/3205897.pdf
    • http://mevakimuvu.mypressonline.com/best_way_to_write_an_article.pdf
    • http://kuxixepiral.22web.org/chilis_menu_mexico.pdf
    • https://nakigere.weebly.com/uploads/1/3/4/6/134608851/siluxerozuzi.pdf
    • https://bevufivob.weebly.com/uploads/1/3/4/6/134669401/5385600.pdf
    • http://wefilevazobakeb.mypressonline.com/16823278401.pdf
    • http://megalivadixen.iblogger.org/tewulapigurugubijazoz.pdf
    • http://wogivodugakovek.mygamesonline.org/83129466153.pdf
    • http://nezidilaginu.iblogger.org/turning_process_ppt.pdf
    • https://beretukajawedu.weebly.com/uploads/1/3/4/7/134713042/55adb41d9b51.pdf
    • http://gukiduwonaxinef.getenjoyment.net/dell_inspiron_n5010_network_drivers_for_windows_7_32_bit_download.pdf
    • http://metinozub.iblogger.org/76818905071.pdf
    • https://vufupobuzalezu.weebly.com/uploads/1/3/4/8/134853030/bac34a358b1.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cf176ec6-4820-456b-adf9-61e5f06c968f.filesusr.com/ugd/43d598_70e8ea090196498492d70059047c4c5a.pdf?index=true
    • https://2e4d99de-9d37-4ce2-abd5-0bbccafdbe51.filesusr.com/ugd/33a2e4_d1409846b9af41688147f03ea2015d4e.pdf?index=true
    • https://4cd5a77a-be8d-44ba-8952-4177873115c4.filesusr.com/ugd/930050_4deef52c3829491f85f2dfbdde1ba431.pdf?index=true
    • http://padegijogul.atwebpages.com/i_robot_vacuum_cleaner_manual.pdf
    • https://uploads.strikinglycdn.com/files/f4ad72b8-f519-4d2e-a599-6ee3c8a0c62b/how_to_pair_blueant_to_iphone.pdf
    • https://f7f2eb1f-4ce6-40bf-b337-6bcc2c9c1a95.filesusr.com/ugd/dc6899_2e089dc72f374cd59182a6d53edd50e1.pdf?index=true
    • https://d451e762-8e00-4155-9971-9512d28d2528.filesusr.com/ugd/b52961_9637605f504b4b6990fe1db3c68a49b8.pdf?index=true
    • https://uploads.strikinglycdn.com/files/aca4ffbb-d4c1-407e-adda-8c59e1a0a405/brother_hl-l2360dn_reset_toner_counter.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010cbf.bin
144d48c022db5162246f424a5f814d77f10dbb747715cea8011c3808b3045c50		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10CBF 5312 bytes
font_01_sfnt_off00011ea5.bin
3c05e831cf3bdf450dc0f891e51e62222efab0dcec997192458d89bc03d67e17		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11EA5 12328 bytes

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