Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c6c9bd92e6e76d2…

MALICIOUS

PDF

73.9 KB Created: 2021-03-01 07:25:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 9e84f3770399e808cddcc4d83df120de SHA-1: dd0bf483a93ec903d1200822d7d98f8b2e98270a SHA-256: 2c6c9bd92e6e76d2e1a78ed0dd1fc79b3e7abb19ebdfe43b2764192193de6e87
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://gimoguvi.ru/award?keyword=fluke+77+history PDF link annotation
    • http://larokamexi.sportsontheweb.net/negiwesawokutikili.pdfIn PDF document text
    • http://zeboxagekej.sportsontheweb.net/1786429782.pdfIn PDF document text
    • https://luzenesezenobo.weebly.com/uploads/1/3/5/3/135307250/voraw-bojawigen-setari-kepog.pdfIn PDF document text
    • https://wezawitulenif.weebly.com/uploads/1/3/4/3/134338426/8831417.pdfIn PDF document text
    • https://kuwuvolabakeg.weebly.com/uploads/1/3/1/4/131407812/d726ea.pdfIn PDF document text
    • https://denudosija.weebly.com/uploads/1/3/4/0/134017010/livap-vutagar-nixopapibipes.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382638/normal_601144bbe2369.pdfIn PDF document text
    • https://cdn.sqhk.co/doporaba/fbjeYSU/drilla_mine_and_crafting_hack.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/xafaxotaful/calling_all_the_monsters_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/solonebosop/xefukeligizijuwiked.pdfIn PDF document text
    • https://s3.amazonaws.com/gimisorixosu/badumur.pdfIn PDF document text
    • https://s3.amazonaws.com/rogugagatuf/panuteva.pdfIn PDF document text
    • https://s3.amazonaws.com/nevowimo/mutexutenazomuve.pdfIn PDF document text
    • https://s3.amazonaws.com/rodigapigeta/9446522589.pdfIn PDF document text
    • https://s3.amazonaws.com/nitirew/scary_face_pumpkin_template.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_off0000e76a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE76A 4764 bytes
SHA-256: 14d20f211af65e5e4e206b8ab1f70010588156720233834c74c1fdeb9fd7af72
font_01_sfnt_off0000f7a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7A9 10400 bytes
SHA-256: ec15eec58a57fc695a83afc0f64f4f1bdaef401f60263253b0e1d11accb1c411