Malicious PDF — malware analysis report

Static analysis result for SHA-256 27ca1c3bd33d6b82…

MALICIOUS

PDF

74.8 KB Created: 2021-02-17 10:58:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: d9c7ce496840bfcd3b8b3f5a9ff2a97e SHA-1: 65e817dfae2abafed0fa1e12c9352755d253439b SHA-256: 27ca1c3bd33d6b822974ea0a3a3c514e69739d364cc808008b50e1e48c121b97
204 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • PRC/3D content in PDF medium CVE related PDF_PRC_3D
    PDF contains PRC 3D content. PRC/U3D parsers have been a recurring Adobe Reader attack surface; treat as a related parser-exploit indicator rather than a specific CVE match.
  • 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/123?utm_term=what%2527s+the+12+steps+to+recovery In PDF document text
    • https://vematonejos.weebly.com/uploads/1/3/1/3/131383464/ziwamukupabaxabi.pdfIn PDF document text
    • https://pigamudabuv.weebly.com/uploads/1/3/4/2/134235231/2737088.pdfIn PDF document text
    • https://cdn.sqhk.co/setuboluraje/eqjg6RL/dog_master_pet_shop_in_delhi.pdfIn PDF document text
    • http://wiinorama.fun/libro_para_aprender_japones_desde_cerof4ac4.pdfIn PDF document text
    • http://world-wildshop.com/sebiximoreropugilyh42o.pdfIn PDF document text
    • http://dress-russia.ru/vofusovadutevawuwupakaxixvn1f.pdfIn PDF document text
    • http://graatorama.fun/790634795461x89n.pdfIn PDF document text
    • http://datinge.site/codycross_answers_group_114_puzzle_4b9g3f.pdfIn PDF document text
    • https://zukosejudejuze.weebly.com/uploads/1/3/2/6/132681260/bikorunibegale.pdfIn PDF document text
    • https://cdn.sqhk.co/goluxewimabu/c9je7jh/lotikigijobakusa.pdfIn PDF document text
    • http://medicinfo.online/the_sims_freeplay_mod_apk_unlimitedmvky3.pdfIn PDF document text
    • https://xajekedifa.weebly.com/uploads/1/3/4/4/134469171/vajifebojevebufibami.pdfIn PDF document text
    • https://cdn.sqhk.co/dutaxato/f0zRZWa/mountain_bike_gloves_fox.pdfIn PDF document text
    • https://gijajagilaz.weebly.com/uploads/1/3/5/3/135313732/8055635.pdfIn PDF document text
    • https://cdn.sqhk.co/retagigimusa/iet74hh/zuvirunigitalo.pdfIn PDF document text
    • http://tryadasert.online/kevosoxq1eeg.pdfIn PDF document text
    • http://pimunipimikuvaj.iblogger.org/78688422855.pdfIn PDF document text
    • http://milanomoda-italy.website/hay_day_icon_meanings2rwoa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e667.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE667 5380 bytes
SHA-256: bfc9f465982048e6f04ff708e41632daa7dbddf6371352646edcb494dea9f92d
font_01_sfnt_off0000f8d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8D1 10984 bytes
SHA-256: dd2dcb73254415f469658dbab043a88bd657ac7c1627e424945ddaa37f50375d

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