Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce6eb762ee04f873…

MALICIOUS

PDF

61.7 KB Created: 2020-12-10 18:20:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: a849d2e31f46252948ea68442928748c SHA-1: 83aa2f0cfc91a782d8651e20fc3584802276edd5 SHA-256: ce6eb762ee04f87362a76e07e17196b60d94d1fea2618dd38f62cdb6d171a59d
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://trafficel.ru/wb?keyword=concrete%20catch%20basin%20forms PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4484995/normal_5fb25bcdb621b.pdfIn PDF document text
    • https://juwimifabofif.weebly.com/uploads/1/3/4/3/134369341/6bdee0.pdfIn PDF document text
    • https://fejagirizow.weebly.com/uploads/1/3/4/5/134525681/23666.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf54183570fb44d1f9819b/1606374425276/bebebolepawizag.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf4b08145a8629dca72e62/1606372104673/tudakezuxupizunebisolujo.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fcee8fd3f7a7c1e6e8875e2/t/5fd167030f163860c7a27bdc/1607558916083/32803157206.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc689fec14dfd36fe18787c/t/5fcf4f71ba7003536ea880f6/1607421811171/67681355119.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc79084633934501854b92a/t/5fc7d1a5a66cae076628b3e6/1606930854112/gapujotanijelibisudonuxoz.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc798bbfc603311fbfb3b4f/t/5fc93e1d5203ef10ed8b01ea/1607024157864/wallpaper_sonic_hd_android.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc50e1111f6a41984a06ac5/t/5fc688e43c02f22b9df02b6a/1606846693793/lily_s_garden_story_spoilers.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0c67840f1034a5ca82603/t/5fc0eb507acac6192ae26eb0/1606478673030/west_hills_christian_school_staff.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2f58b2cf09257bd796827/t/5fc43486173fb5383b287750/1606694022903/76249619858.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd1f6fa43b1e174043bb74/1606229873653/claudette_colvin_twice_toward_justice.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49512802-69ab-42dd-8bbe-ab8ec07398c4/kotilino.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc3746f239b072291417dd8/t/5fccf2bea87f9f1b19da7099/1607267008420/19471217222.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_off0000b644.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB644 5132 bytes
SHA-256: a339c3d96855c8699e9750079c52d28edafd01134afea8b32f51a459493c565c
font_01_sfnt_off0000c78f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC78F 10172 bytes
SHA-256: 157465d9b52cd196113bcb01532cc59f2ff1de7557b345cda6d1f6cafc8e731f

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