Malicious PDF — malware analysis report

Static analysis result for SHA-256 27e51c342f442113…

MALICIOUS

PDF

73.1 KB Created: 2021-02-14 20:47:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: fed7199fcbd7b622734410f9524636cd SHA-1: 48cb5afe6eab9857101e7dbbee4df7888a7c7417 SHA-256: 27e51c342f442113f317b1d3fd6ec735aa4699e5141efcb65b0aaee4ea5363a7
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=schwinn+willow+river+trailer+manual In PDF document text
    • http://topplafond.xyz/persona_5_test_answers_eurogamerafjyy.pdfIn PDF document text
    • http://nyvelsets.online/free_throw_distance_basketball2t8gb.pdfIn PDF document text
    • http://memilarud.22web.org/prefixes_and_suffixes_worksheets_for_grade_3.pdfIn PDF document text
    • https://cdn.sqhk.co/satasevubu/qal4Hhb/eagles_greatest_hits_vinyl_value.pdfIn PDF document text
    • https://penaveligatoka.weebly.com/uploads/1/3/4/3/134314422/5883308.pdfIn PDF document text
    • https://cdn.sqhk.co/vovoritufi/NPOjbgf/sago_mini_camping_mod_apk.pdfIn PDF document text
    • http://cosmeteca.com/kutoxizegoxizikunekth3sj.pdfIn PDF document text
    • http://musc-media.xyz/605970702676s6nr.pdfIn PDF document text
    • http://espacecmb.xyz/opera_browser_portableu58vx.pdfIn PDF document text
    • http://madewithsunshine.com/21807396416gmbtj.pdfIn PDF document text
    • https://cdn.sqhk.co/jigugabopu/iegcyhc/gimuniligut.pdfIn PDF document text
    • https://cdn.sqhk.co/nakunadubux/9iWE7fU/xeneponegarowaw.pdfIn PDF document text
    • http://b0xberry.online/how_to_integrate_idm_in_google_chrome_manuallyw69x3.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/muvojugejoxip/58113871568.pdfIn PDF document text
    • https://s3.amazonaws.com/tujeviwakirawu/website_movie_er_software.pdfIn PDF document text
    • https://s3.amazonaws.com/povelenavuviw/wimeje.pdfIn PDF document text
    • http://datatoxozapi.epizy.com/gba_emulator_android_apkpure.pdfIn PDF document text
    • https://s3.amazonaws.com/zafaronivaj/save_base64_to_file_php.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d94e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD94E 5116 bytes
SHA-256: a07daa5fe1c6f17509878aa45fe24cecba886bc23ccd664487893d50c872341f
font_01_sfnt_off0000ea9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA9C 1800 bytes
SHA-256: 51ebeec29509b87aa858d500e37ac8853184703d07d1f913ce36d8e1dc7764c0
font_02_sfnt_off0000f32a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF32A 10304 bytes
SHA-256: a7977ea11a720f3f39f54785b21e4abb17f4fe776a2a10f4b4cc34d4ac2af45b