Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f0ba6069dd3dbda…

MALICIOUS

PDF

71.5 KB Created: 2021-03-01 02:42:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: b1f4b26aa02d617c8d2c71c316364aae SHA-1: ed1026ae3f454f448427bb2c90f30f319a7a4286 SHA-256: 4f0ba6069dd3dbdaa77a4013388edd04f8efad7ea62bbdd5789f1c63fff0c4d8
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://midufefew.ru/wix?keyword=mandaluyong+zip+code+barangka+ilaya PDF link annotation
    • http://salonly.xyz/what_is_the_structure_of_a_position_paperqhlt9.pdfIn PDF document text
    • http://tuwasukam.getenjoyment.net/the_mixed_up_files_of_basil_e_frankweiler.pdfIn PDF document text
    • http://wersita.fun/robilukeresotuvedkgv6.pdfIn PDF document text
    • http://vijexibat.mywebcommunity.org/how_to_change_the_charging_port_on_a_samsung_tablet.pdfIn PDF document text
    • http://stixlife.info/tengai_makyou_2_ps2ro0ip.pdfIn PDF document text
    • http://minuette.me/past_simple_exercises_regular_verbs_dockxq4t.pdfIn PDF document text
    • http://freedate18.xyz/923482293832onsz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369640/normal_5febd907e5503.pdfIn PDF document text
    • https://jesisime.weebly.com/uploads/1/3/4/8/134886507/6270942.pdfIn PDF document text
    • http://begdas.space/virtual_classroom_website_templates_free_downloadwdg2r.pdfIn PDF document text
    • http://ru-1.casa/riselosakavupo8osmq.pdfIn PDF document text
    • http://tryse.xyz/grove_scissor_lift_troubleshootinghz8m2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421038/normal_602b34b75df71.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/vabedafozo/poxusimizenomuredog.pdfIn PDF document text
    • http://zejibanunepi.myartsonline.com/63939662924.pdfIn PDF document text
    • https://s3.amazonaws.com/mokamoba/call_break_multiplayer_free.pdfIn PDF document text
    • https://s3.amazonaws.com/wizuluworafid/scientific_method_lab_high_school_biology.pdfIn PDF document text
    • https://s3.amazonaws.com/mulerux/nazm_hikmetin_iirlerinden.pdfIn PDF document text
    • https://s3.amazonaws.com/tixedujegibex/whirlpool_duet_parts_manual.pdfIn PDF document text
    • http://vujuvisesakok.myartsonline.com/tajan.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_off0000cd8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD8D 5424 bytes
SHA-256: e0913cd51d78a6bdb57b528b3185de5e0f755b5341cab8c41972cfe3b3d08386
font_01_sfnt_off0000e029.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE029 15336 bytes
SHA-256: a6d62b640bc4e1fbc7054131ae0966227e74ffdf38ed2314c0718cf61a5f5ae3