Malicious PDF — malware analysis report

Static analysis result for SHA-256 049dce0ca4324c4c…

MALICIOUS

PDF

68.7 KB Created: 2021-01-30 05:41:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: c52702b86aae6467252d31b53f30127f SHA-1: db792af889b41548b479fcecb459042edcc244ff SHA-256: 049dce0ca4324c4caa0f26e2db245a96828ecd2ab29a6c22d987bbfe29accac1
164 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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://maypoin.ru/aws?utm_term=celtx++mac+english PDF link annotation
    • http://bofinaposo.iblogger.org/89552266305.pdfIn PDF document text
    • http://takipleskazan.org/95861426805jz507.pdfIn PDF document text
    • http://reduslimitaly-official.site/37220031515nqm0s.pdfIn PDF document text
    • https://levibaxa.weebly.com/uploads/1/3/1/4/131408620/db9071db8f.pdfIn PDF document text
    • http://mybestchan.online/1360556949d3k9a.pdfIn PDF document text
    • https://jokisutenewaj.weebly.com/uploads/1/3/1/4/131483229/tozexirif.pdfIn PDF document text
    • http://sdfsdfsdf.shaketorch.com/ib_business_and_management_syllabus_2016.pdfIn PDF document text
    • http://fogarapisow.22web.org/maxunepodokaxoku.pdfIn PDF document text
    • http://espaceclient-cmb.com/jinevikitawatowipuro6h0ny.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/bagisi/avg_internet_security_with_key.pdfIn PDF document text
    • https://s3.amazonaws.com/fadupazageraf/top_android_apps_for_chrome_os_reddit.pdfIn PDF document text
    • https://s3.amazonaws.com/daxemo/91350020675.pdfIn PDF document text
    • https://s3.amazonaws.com/pojikovewijeja/free_printable_envelope_template_a4.pdfIn PDF document text
    • http://foboganezebalo.rf.gd/picsart_background_full_screen_hd.pdfIn PDF document text
    • https://s3.amazonaws.com/xapidajovaji/kappa_tracksuit_bottoms_size_guide.pdfIn PDF document text
    • http://sobogasitizi.epizy.com/sunil_chhetri_information_in_marathi.pdfIn PDF document text
    • http://voboxixet.rf.gd/42555082077.pdfIn PDF document text
    • https://s3.amazonaws.com/mexesazaxasa/spark_browser_filehippo.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_off0000d1e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1E4 5088 bytes
SHA-256: 994a1cafed3fd256608bd2364ae4595ecd08556a96d200e11ed005344649c156
font_01_sfnt_off0000e30a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE30A 10324 bytes
SHA-256: 415ba7dd7b914be4c58b6f5ac518a032f9f70686b6e056a1a39ebd77cbc7fa16