Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbdcf7a22edb60c7…

MALICIOUS

PDF

83.5 KB Created: 2021-04-08 20:31:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 047e063eaaa5f6151960cd78ca9f3a34 SHA-1: ef9604f16585c818aa2779951e21ae217d88f110 SHA-256: bbdcf7a22edb60c796bf328b70e9707bcf9098b0c2376dc27bb169a591ed0ea8
156 Risk Score

Malware Insights

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

This PDF document contains a large number of external links, many of which are likely part of a link farm designed to improve search engine rankings. One prominent URL, 'https://jumiwimov.ru/strik?utm_term=brandon+burlsworth+movie+netflix', is presented in a way that suggests it is a search result, likely to trick users into visiting a malicious site. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • 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://jumiwimov.ru/strik?utm_term=brandon+burlsworth+movie+netflix PDF link annotation
    • https://wivozodibadire.weebly.com/uploads/1/3/0/7/130775536/6610300e1a8f9.pdfIn PDF document text
    • http://bilkaita.space/derringer_meaning_in_farsijf5wf.pdfIn PDF document text
    • https://nozezekotelipub.weebly.com/uploads/1/3/4/8/134883262/9083763.pdfIn PDF document text
    • https://pebawozo.weebly.com/uploads/1/3/4/8/134865175/173dfaf43d2d.pdfIn PDF document text
    • http://pedron.fun/88355588157x4hjb.pdfIn PDF document text
    • http://obmenkalnr.online/karuzetuwigelubagxwc2.pdfIn PDF document text
    • https://beluxavin.weebly.com/uploads/1/3/4/5/134507718/nojutalonixab_segepif_gesomadetide_mibulusitirovo.pdfIn PDF document text
    • http://korecos.ru/how_to_turn_off_airplane_mode_on_doro_phone04u3s.pdfIn PDF document text
    • http://savadaqwe.space/video_wallpaper_free_for_windows_7bw1uc.pdfIn PDF document text
    • http://olymptrade.buzz/marakofavumapkq.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wovitiku/queso_mascarpone_la_serenisima_informacion_nutricional.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d8bf74c-7b43-4f7c-8e4f-3eb260e5d16e/89576494074.pdfIn PDF document text
    • https://s3.amazonaws.com/jidosatikim/the_spectacular_now_book_ending.pdfIn PDF document text
    • https://s3.amazonaws.com/rimejiguvif/didevaguvanowupimirageja.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d06995f-082a-4377-a7ac-ed4291517666/how_to_open_sentry_1250_safe_with_combination.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d04cd19-2d72-4383-b159-c54b48da60b9/guxaro.pdfIn PDF document text
    • https://s3.amazonaws.com/lofese/pefasadakowudunize.pdfIn PDF document text
    • https://s3.amazonaws.com/gawabog/refrigerator_ice_maker_not_working_whirlpool.pdfIn PDF document text
    • https://s3.amazonaws.com/xesigeze/el_arte_de_no_amargarse_la_vida_ebook.pdfIn PDF document text
    • https://s3.amazonaws.com/luworizesupox/modern_world_history_patterns_of_interaction_chapters.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/27c2299c-75c4-4f3a-879e-26ee4233a0cc/xuronidukuta.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_off0001071b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1071B 5556 bytes
SHA-256: 006faf7e2e5ae5dd13ccf95ccb76265b0cf21de8ac2d7a3305edd0ca33d3193b
font_01_sfnt_off000119ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119EC 11744 bytes
SHA-256: 691683a9cf127482dc1d7a077366d32bb158134c2c21c952a2697f139f13403e

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