Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d0bbbc632af91bb…

MALICIOUS

PDF

65.8 KB Created: 2021-02-21 23:13:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 2d3b30ab52c5175fcb22ff815c801f1a SHA-1: 00839183b9abc4311c9511dab3c6d087619ba9f6 SHA-256: 5d0bbbc632af91bb7161f0ffec79ab1284d9602fb87cf428618273ec1f0e3971
254 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/wix?keyword=marble+drop+cool+math In PDF document text
    • https://dopotixoniwatom.weebly.com/uploads/1/3/1/0/131070918/6d57a.pdfIn PDF document text
    • https://xigokujote.weebly.com/uploads/1/3/4/6/134649591/zolukogenalejojewol.pdfIn PDF document text
    • http://kupivse.xyz/weather_report_for_camlachie_ontariobkhp2.pdfIn PDF document text
    • https://najigojuvunijo.weebly.com/uploads/1/3/0/8/130874658/ragilul-votupizutiga-sidisigododu.pdfIn PDF document text
    • https://jiresuzava.weebly.com/uploads/1/3/4/7/134706808/pizugopowenewite.pdfIn PDF document text
    • http://speak4pro.com/27549562476rze8v.pdfIn PDF document text
    • http://probnik1313.tech/wadepoviwodudosovepifafikiot5o.pdfIn PDF document text
    • http://lnstagram-badge-verification.com/xulutetameranebukejiteyje2b.pdfIn PDF document text
    • https://gavokafiwafez.weebly.com/uploads/1/3/1/3/131381231/9cc6ece.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/duzexefemosaxe/financial_reporting_software_hyperion.pdfIn PDF document text
    • https://s3.amazonaws.com/vovabagubajegeb/22531115115.pdfIn PDF document text
    • https://s3.amazonaws.com/wovitiku/soya_bean_production_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/wexoteluwag/62613467726.pdfIn PDF document text
    • https://s3.amazonaws.com/tiniruru/biglietti_da_visita_gratis_online.pdfIn PDF document text
    • https://s3.amazonaws.com/kozewuposoridil/supoxuzumokotor.pdfIn PDF document text
    • https://s3.amazonaws.com/wovugi/amplified_bible_jar.pdfIn PDF document text
    • https://s3.amazonaws.com/gomaxod/wofejowedaxokopivizatizo.pdfIn PDF document text
    • https://s3.amazonaws.com/jewizopukuni/cinema_guide_nairobi.pdfIn PDF document text
    • https://s3.amazonaws.com/xisakazelelinim/rugizigomakedotedidaloleb.pdfIn PDF document text
    • https://s3.amazonaws.com/risalenefazozo/zukigesibiderasupa.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_off0000c5c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5C4 5280 bytes
SHA-256: 2b98551e82668f1aac865b2ed00c72568f60f8ef7eecc6a74a79a75378a664ab
font_01_sfnt_off0000d790.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD790 10136 bytes
SHA-256: 30cf3465a8d1a73c71640345eb31a1bdcb27184821101e2247f734bc4ed06004

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