Malicious PDF — malware analysis report

Static analysis result for SHA-256 688783a9050d3b4c…

MALICIOUS

PDF

63.9 KB Created: 2021-01-30 05:50:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 3b4bd05c9ba8f437495849fadb8cd2f0 SHA-1: e0fba94a27198042ac6a5006e577246565db74c2 SHA-256: 688783a9050d3b4cf335dc4ce8af0b184415ba7d1af0f5953b87b7de276a344f
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://leonvi.ru/aws?utm_term=times+reporter+all+star+game+2018 PDF link annotation
    • https://wegedojilo.weebly.com/uploads/1/3/1/3/131398291/4759270.pdfIn PDF document text
    • http://mysteps.online/how_to_play_mancala_printable_instructionsibfx3.pdfIn PDF document text
    • https://cdn.sqhk.co/kugorazig/FOgdGR2/1980s_outliner_markers.pdfIn PDF document text
    • http://test123test.xyz/59598218981clja2.pdfIn PDF document text
    • http://adyga.site/unit_8_right_triangles_and_trigonometry_worksheet_answer_key6v1bs.pdfIn PDF document text
    • https://tejojobowadame.weebly.com/uploads/1/3/0/8/130874570/3e28175ca1.pdfIn PDF document text
    • http://indital.space/kisaxabmtuuh.pdfIn PDF document text
    • https://cdn.sqhk.co/jesotipo/ijghgji/saddam_hussein_wife.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/sivanira/ultrasound_guided_fine_needle_aspiration_lymphoma.pdfIn PDF document text
    • https://s3.amazonaws.com/luworizesupox/gif_bendera_indonesia_berkibar.pdfIn PDF document text
    • https://s3.amazonaws.com/kabisebax/avast_antivirus_premium.pdfIn PDF document text
    • https://s3.amazonaws.com/xanunafojuloki/action_verb_worksheets_for_grade_2.pdfIn PDF document text
    • https://s3.amazonaws.com/suxuzubojut/variance_analysis_report_example.pdfIn PDF document text
    • https://s3.amazonaws.com/dinisemowoge/funisolepadivexidisagomil.pdfIn PDF document text
    • https://s3.amazonaws.com/juvuraguvutoxif/6565634251.pdfIn PDF document text
    • https://s3.amazonaws.com/leributafa/cyberghost_android_crack_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/pesetufavo/cbse_class_11_ncert_physics_textbook.pdfIn PDF document text
    • https://s3.amazonaws.com/fuzafuzeruwit/powerpoint_templates_new_technology.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_off0000bf84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF84 5608 bytes
SHA-256: 469f5d6e0da5d6497d3b6f13bb727c036756148d4fa60a3f51997b0a51968791
font_01_sfnt_off0000d279.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD279 9736 bytes
SHA-256: 815e9e64bbcf74113255d67a15a5101d73e25e93bd2d0226712184e607682d2b

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