Malicious PDF — malware analysis report

Static analysis result for SHA-256 5696f09c30189d97…

MALICIOUS

PDF

71.1 KB Created: 2021-01-19 15:04:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 615b3172595c55908d6f8ab307902ad7 SHA-1: 0b4a1c188a762d583fbd0f1cf484c6e7b6f72104 SHA-256: 5696f09c30189d97f209aea0fa0928273fdc2b1265a80d3f067a2fd64b1fcb83
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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.
  • 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.
  • 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://yafferge.ru/wb?keyword=3ds%20max%20light%20mixer%20tutorial In PDF document text
    • http://gifozazupu.iblogger.org/55127747199.pdfIn PDF document text
    • https://site-1220161.mozfiles.com/files/1220161/beginner_clarinet_music_sheet.pdfIn PDF document text
    • https://site-1177329.mozfiles.com/files/1177329/grumpy_cat_death_stare.pdfIn PDF document text
    • http://vebilodugisugod.iblogger.org/vekuzuletibopepun.pdfIn PDF document text
    • https://site-1197381.mozfiles.com/files/1197381/tarizenoxa.pdfIn PDF document text
    • https://site-1176958.mozfiles.com/files/1176958/62812573256.pdfIn PDF document text
    • https://cdn.sqhk.co/liweruruzed/jijiBgd/rush_race_movie.pdfIn PDF document text
    • https://cdn.sqhk.co/vufisolepu/chiSic5/15415248418.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pasigajixivete.epizy.com/2506971456.pdfIn PDF document text
    • https://s3.amazonaws.com/wefemabeni/62300996907.pdfIn PDF document text
    • http://tuxefefili.epizy.com/radasarabapezenipafizi.pdfIn PDF document text
    • http://kujujigufa.epizy.com/bruxelles_formation_adresse_rue_de_stalle.pdfIn PDF document text
    • http://vaxomuterok.epizy.com/jerajiwokoxo.pdfIn PDF document text
    • https://s3.amazonaws.com/nowonovege/concrete_slab_design_spreadsheet.pdfIn PDF document text
    • http://riberudedanute.epizy.com/android_auto_to_sd_card.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_off0000da67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA67 5376 bytes
SHA-256: 1687f62a0cab5e35ee399a12abdcbcee6d27607c3e0857a5ac1042d88d89863d
font_01_sfnt_off0000ec80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC80 10252 bytes
SHA-256: 90365f569d4037df0ad296736bac90f82ea9c6ece7ad16d065bd7df0ac3d92ef