Malicious PDF — malware analysis report

Static analysis result for SHA-256 321237b8195a02cf…

MALICIOUS

PDF

60.7 KB Created: 2021-02-21 21:19:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 82b4b1b114d6e38f2f44f6e68342cb65 SHA-1: 2986a2acc7f74fd561ead8d260f747e7f8d020fe SHA-256: 321237b8195a02cf69d0152ff61adb1fe8246c907e2a8c95a88e5360b15b887e
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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.
  • 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=lanier+county+powerschool In PDF document text
    • http://taxavifosobedul.iblogger.org/mobojigebubaxi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4493541/normal_5ff4a67befc11.pdfIn PDF document text
    • http://badgesverified.com/modern_powerpoint_templates_2018_freekbcd8.pdfIn PDF document text
    • http://bitjoms.xyz/17695131205r4ih1.pdfIn PDF document text
    • http://bepevekebezupu.22web.org/45260175969.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453332/normal_6032b1498b79b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445115/normal_5ffe91c41acc3.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/wuwabobujasivor/neumonia_tratamiento_farmacologico.pdfIn PDF document text
    • https://s3.amazonaws.com/bopuxosavubare/68652466348.pdfIn PDF document text
    • http://baperosuvo.rf.gd/batman_arkham_asylum_a_serious_house_on_serious_earth_the_joker.pdfIn PDF document text
    • https://s3.amazonaws.com/metubevozisul/angry_emoji_hd_pic.pdfIn PDF document text
    • https://s3.amazonaws.com/ponivotigegepub/mejefobe.pdfIn PDF document text
    • http://rikonobawo.epizy.com/cpwd_dsr_2018_civil_free.pdfIn PDF document text
    • http://mafakizukizunof.epizy.com/32916255634.pdfIn PDF document text
    • http://sugizujesel.epizy.com/69482715931.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_off0000b360.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB360 5156 bytes
SHA-256: eea517bf268e6ea7b27a074993ee0be7f44faf2e2232a31512e1a9bde4298028
font_01_sfnt_off0000c501.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC501 9676 bytes
SHA-256: 35401c631af3ca9c56e3cc9f0e48fd277d878525585f9575e9e78fe086637c67