Malicious PDF — malware analysis report

Static analysis result for SHA-256 443249636d7465bc…

MALICIOUS

PDF

72.7 KB Created: 2021-03-03 14:05:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 7cc62c2ddf387de928c864f18aa4a2b1 SHA-1: 8f69d078dda19524a57e1bb08ee2c10031167b19 SHA-256: 443249636d7465bc7f0d55c818b9b57ea16c98fee63d02bcea20cbd1df31a459
186 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://nipisod.ru/award?keyword=can+you+get+unsaved+snapchat+messages+back PDF link annotation
    • https://jizesemud.weebly.com/uploads/1/3/2/7/132710762/24fb309220f3.pdfIn PDF document text
    • https://kusebavizekofuk.weebly.com/uploads/1/3/4/0/134098677/fidov-xugesa-genugisikimife-tupuxe.pdfIn PDF document text
    • http://online-sistem.site/miniduzuvizagivuzapaxum7qcxw.pdfIn PDF document text
    • https://gipusarele.weebly.com/uploads/1/3/4/7/134708700/0cd4c69a2.pdfIn PDF document text
    • https://vopupina.weebly.com/uploads/1/3/1/0/131070761/ganamurawikujer-titonu-joxisi.pdfIn PDF document text
    • http://mubarominufu.iblogger.org/77075649430.pdfIn PDF document text
    • https://zedafirulatako.weebly.com/uploads/1/3/4/5/134584693/071bb9f1cc.pdfIn PDF document text
    • http://sis-paypal.com/court_of_thorns_and_roses_character_quizllba1.pdfIn PDF document text
    • http://sodazetibup.iblogger.org/34169374001.pdfIn PDF document text
    • https://gegovowazuravas.weebly.com/uploads/1/3/1/3/131398401/2bac14.pdfIn PDF document text
    • http://ulekschool.online/45774506422828kp.pdfIn PDF document text
    • http://foxujosavubisi.22web.org/fekumifafetujikoraboretor.pdfIn PDF document text
    • http://vuvefezod.iblogger.org/rumiduwafadixumepubula.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://luvabokinoleg.onlinewebshop.net/82028505654.pdfIn PDF document text
    • http://jabodegodonirad.atwebpages.com/17739145775.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_off0000dfbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFBC 5628 bytes
SHA-256: 9f43a10800e1eddae715b04f3c83002d0c3cc97131f833e784a8b02352f21963
font_01_sfnt_off0000f2cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2CB 10256 bytes
SHA-256: 03212b6f5f0ec40007b8a2491e0aec0ebdd18281dfc2bd27672f8b85310b751e