Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2076b3fd54b63c6…

MALICIOUS

PDF

65.4 KB Created: 2021-02-14 15:29:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 32e9cbd227fe7cb7625d289b8e9e5daa SHA-1: da9ae730be2b8bc0f3fb396d257c0c7d9f870a8f SHA-256: d2076b3fd54b63c6c2ce4451d98953731981c2e233fcb5ad709c5dd1e06db829
196 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.
  • 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 https://baarspo.ru/wix?keyword=a+la+claire+fontaine+chords PDF link annotation
    • https://tadizusojad.weebly.com/uploads/1/3/2/7/132712436/wekagi.pdfIn PDF document text
    • https://zimuvudiredefux.weebly.com/uploads/1/3/2/7/132710782/21fd9b79.pdfIn PDF document text
    • https://cdn.sqhk.co/xitilesuxiw/jjgIYCx/bunny_bubbles_song_id.pdfIn PDF document text
    • https://sidopaxabu.weebly.com/uploads/1/3/1/3/131398246/rafuduj_pigexipikekitu.pdfIn PDF document text
    • https://cdn.sqhk.co/sovokeduseb/JvZhgFi/latest_ringtone_2020mp3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/ninazarila/employment_verification_letter_template_shrm.pdfIn PDF document text
    • https://s3.amazonaws.com/jolunenafobuw/52570576439.pdfIn PDF document text
    • http://faganelatoke.epizy.com/lutimibufiroz.pdfIn PDF document text
    • https://s3.amazonaws.com/nuruvapozixix/amphoteric_oxides_list.pdfIn PDF document text
    • http://zidegegizuvodin.epizy.com/ecdc_measles_report.pdfIn PDF document text
    • http://lakiver.epizy.com/juromofifenolirabapesefu.pdfIn PDF document text
    • http://wetedezowob.rf.gd/reliability_centered_maintenance_moubray.pdfIn PDF document text
    • https://s3.amazonaws.com/tobaziw/chrome_android_bottom_bar.pdfIn PDF document text
    • https://s3.amazonaws.com/dudigonifu/bendix_ad-_ip_air_dryer_service_manual.pdfIn PDF document text
    • http://wobudesupak.epizy.com/niroxudagezosarizem.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b70f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB70F 4888 bytes
SHA-256: c51c8974e93beff27a080d1a250a82fbcf8f1663866b9e4659f7307e33b99283
font_01_sfnt_off0000c793.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC793 10332 bytes
SHA-256: 4277d0e0e397b2c927f98cf355b484d664c84c4e59270d25989802013d838e87
font_02_sfnt_off0000eadd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEADD 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3