Malicious PDF — malware analysis report

Static analysis result for SHA-256 2112ed7bb49a2f3a…

MALICIOUS

PDF

77.8 KB Created: 2021-02-10 05:06:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 948f4154510fd0a75d4bb3e508856d9e SHA-1: 706ba6ce3966f54b6d405ec51d0193542dd0ee4c SHA-256: 2112ed7bb49a2f3a02c7f3517650d4b6eb1dd162c04a36b618250dc206cb9a4e
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs, many of which point to disposable domains and are flagged as link farms. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. Although no scripts were explicitly extracted, the PDF structure and numerous external links suggest it's designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://seumenha.ru/aws?utm_term=osaka+map+pdf PDF link annotation
    • http://bathforlegs.xyz/chocolate_cake_recipe_from_scratch_without_buttermilk_pancakesw4u6g.pdfIn PDF document text
    • http://trikolor.site/undead_walking_animationsvqvgi.pdfIn PDF document text
    • http://talebakela.iblogger.org/comma_practice_worksheet_high_school.pdfIn PDF document text
    • http://all-host.site/best_epic_dragons_in_dragon_citywl3tk.pdfIn PDF document text
    • http://pomuropujuj.22web.org/clinometer_bubble-_level_full_apk.pdfIn PDF document text
    • http://theplafond.xyz/jovabubisudategelikarhxkiv.pdfIn PDF document text
    • http://reawolt.online/denon_home_audio_equipmentaf686.pdfIn PDF document text
    • http://nutristrike-shop.ru/88530268287yx9ve.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470402/normal_601f234d6dc3b.pdfIn PDF document text
    • http://mazafaka69pussy.online/13685793036wwa1l.pdfIn PDF document text
    • http://budonap.iblogger.org/kirolanuwukamenot.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xuduzunubedi.rf.gd/livros_de_tales_de_mileto_em.pdfIn PDF document text
    • http://gazugitub.epizy.com/x32_digital_mixer_manual.pdfIn PDF document text
    • http://pasalalu.rf.gd/equipotential_lines_and_electric_field_lab_report.pdfIn PDF document text
    • https://s3.amazonaws.com/wazorixekunafob/best_text_adventure_game_android.pdfIn PDF document text
    • https://s3.amazonaws.com/xurixado/88779245407.pdfIn PDF document text
    • https://s3.amazonaws.com/wupuxus/acrylic_mirror_sheet_6ft_x_4ft.pdfIn PDF document text
    • http://fizuvofodiku.epizy.com/endothermic_and_exothermic_reaction_worksheet.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_off0000f4f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4F6 5148 bytes
SHA-256: 4de01fa9caf67979906e4d9d8750d5f535587738bfb17eccd2d160787751c51f
font_01_sfnt_off00010670.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10670 10604 bytes
SHA-256: a025528f07ade6205b797e3ced25b45b01aafb79ea1d4ed7b2937749ddd68b3a

Open this report in the interactive analyzer, or submit your own file for analysis.