Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bcda1d04594c0d2…

MALICIOUS

PDF

64.1 KB Created: 2021-02-21 06:37:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 786413e4e03cb42d5ef8aa35422ece79 SHA-1: b0578d21fd1dcd80478bca2e89e0bf6aed3176f1 SHA-256: 5bcda1d04594c0d2491ea1dfcb4e66ab215b0be91c1485b43a681c601aad7954
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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://bologen.ru/wix?keyword=shopkeepers+bell+australia PDF link annotation
    • https://cdn.sqhk.co/kewukapugino/cko1YXg/puzoriwozowetedopimuf.pdfIn PDF document text
    • https://bubemafu.weebly.com/uploads/1/3/5/3/135323081/favub-mefuparobora-jikapime-sapenokak.pdfIn PDF document text
    • https://dewifekezag.weebly.com/uploads/1/3/5/3/135313931/446305.pdfIn PDF document text
    • https://cdn.sqhk.co/sebelokili/RjjTict/copy_of_marriage_certificate_akron_ohio.pdfIn PDF document text
    • https://gesovomovo.weebly.com/uploads/1/3/4/7/134716395/jakorin-vivitilamine.pdfIn PDF document text
    • https://nemabofafuz.weebly.com/uploads/1/3/5/3/135389169/fepovajaw-jifetad.pdfIn PDF document text
    • https://cdn.sqhk.co/matezafun/fywLUOi/gonakawife.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/kewakuko/blackest_eyes_drum_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/firigugixujotov/adobe_premiere_pro_cc_2016_requirements.pdfIn PDF document text
    • https://s3.amazonaws.com/mojivikapeti/89369513054.pdfIn PDF document text
    • http://letilewe.rf.gd/bootstrap_templates_for_website_themeforest.pdfIn PDF document text
    • http://leludopovofa.rf.gd/19033459770.pdfIn PDF document text
    • https://s3.amazonaws.com/fixararololu/miwinegeloman.pdfIn PDF document text
    • http://rozasazi.epizy.com/50893003851.pdfIn PDF document text
    • https://s3.amazonaws.com/fonibinaraj/blending_consonants_and_vowels_worksheets.pdfIn PDF document text
    • http://wepezip.epizy.com/victoria_university_course_guide.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_off0000bd93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD93 5216 bytes
SHA-256: e2b95b23631ea5fb2b0312af3c51451cc2a9ab709ae765c31ee69122011d4feb
font_01_sfnt_off0000cf3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF3E 10476 bytes
SHA-256: a3b3f9474adc943726d36545933b7e3ad7784c7b4fa670d7cf65977d9c8b9cb9

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