Malicious PDF — malware analysis report

Static analysis result for SHA-256 824b61acc94498f7…

MALICIOUS

PDF

74.6 KB Created: 2021-02-02 08:27:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 5b268e553d382f0792c078d40388c6b4 SHA-1: 504f6a752cd08df411f920e0fa8a4ca7b063aa7b SHA-256: 824b61acc94498f7cab3d5fa507c4cc78c8d56a099f956368ab449017e8cdeb6
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://jottigo.ru/aws?utm_term=how+to+answer+job+application+form+questions PDF link annotation
    • https://cdn.sqhk.co/kipaselofuza/jhaiap8/hepatitis_a_ab_total_reactive_quest.pdfIn PDF document text
    • http://hotel-engels.ru/tawisilatoduk432.pdfIn PDF document text
    • https://cdn.sqhk.co/kafexobesa/Z8u2ia2/video_of_tuberculosis_patient.pdfIn PDF document text
    • http://arnautmebel.ru/eternium_leveling_guidevcb5s.pdfIn PDF document text
    • http://hotita.fun/sfv_patch_noteswnzvx.pdfIn PDF document text
    • http://begemot.space/187652382409hlon.pdfIn PDF document text
    • https://cdn.sqhk.co/gitovera/pibiexE/3893333071.pdfIn PDF document text
    • https://cdn.sqhk.co/busosuwik/8jhlgIz/14036801978.pdfIn PDF document text
    • https://cdn.sqhk.co/madosodu/Khdgjge/dominos_5._99_deal_items.pdfIn PDF document text
    • http://academic-club.ru/enable_developer_android_autof8l7q.pdfIn PDF document text
    • http://lnstagramverifiedsbadgeform.com/xulexldeh5.pdfIn PDF document text
    • http://dovulup.iblogger.org/munda_ambarsariya_song_ringtone.pdfIn PDF document text
    • http://idealicaufficiale.website/convert_scanned_to_word_free_online43981.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/ninazarila/hibiscus_plant_information_in_kannada.pdfIn PDF document text
    • https://s3.amazonaws.com/tikofaketonub/15742912333.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_off0000e6c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6C6 5556 bytes
SHA-256: 2375476d8a531e3a6524949fa1695e06623dd11474f9fd83238ba6fe7153b6f0
font_01_sfnt_off0000f9ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9AC 10368 bytes
SHA-256: 491b4f1daaa8320bf5f32fbac005291c8fceb6af56257ba52ab38539d47c9b00