Malicious PDF — malware analysis report

Static analysis result for SHA-256 45df3268b520e798…

MALICIOUS

PDF

76.9 KB Created: 2021-05-21 20:26:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 0ed912a4f03aa940e79448b9d48d45ca SHA-1: a0df4c482e0ac814ded5cefa535bd0dde8c4ef2a SHA-256: 45df3268b520e79858dbcc5b24aed3b7c0a2b0f79f82330c5866586c03a5c29f
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs pointing to link farms hosted on disposable domains, a common tactic for phishing or distributing further malware. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, suggests a lure related to 'Destilando amor capitulos completos gratis', likely to entice clicks on the malicious links.

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
  • 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://xezojetit.ru/strik?utm_term=destilando+amor+capitulos+completos+gratis PDF link annotation
    • https://sibevuguz.weebly.com/uploads/1/3/4/8/134859718/cfaa3d0286ea3d.pdfIn PDF document text
    • https://sibojigejediwij.weebly.com/uploads/1/3/4/6/134606131/17629ce9dc0d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421623/normal_604a8d1e8e766.pdfIn PDF document text
    • https://damemerivojed.weebly.com/uploads/1/3/4/3/134378109/korufetedigoxedibamo.pdfIn PDF document text
    • https://jovawesuranabi.weebly.com/uploads/1/3/1/3/131379439/subibajixibapi_famujogumorixu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416921/normal_60318062b3581.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481422/normal_601a758e9ba58.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405185/normal_6032e31589ae6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416512/normal_600c5d24ba60f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419650/normal_6007c8236fe80.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476595/normal_6003a3c1e3fc6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386830/normal_606542202bf7d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ab11779-2ac8-404a-8a98-00960c9bd300/eventide_h9_core_harmonizer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ea43c0c-2126-42c7-ac61-8b7ce031af66/shark_sv780_pet_perfect_ii_18v_cordless_handheld_vacuum.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f983dce8-eb02-42f9-b8c4-9629a9110ef8/the_family_crucible_napier.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80dfe2e1-8c1a-437c-99fd-aab68ad446ee/37107773369.pdfIn PDF document text
    • https://s3.amazonaws.com/buwosevax/javascript_get_date_format_dd_mm_yyyy.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/92fe4574-ffd8-4c2d-8484-40c6047c2651/vocabulary_workshop_level_c_unit_3_answers_synonyms_and_antonyms.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52a0cca6-4aa3-40a1-8c38-234984255385/can_you_have_a_red_eyed_tree_frog_as_a_pet.pdfIn PDF document text
    • https://s3.amazonaws.com/fupanabivote/cacfp_texas_income_guidelines.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_off0000eb43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB43 5392 bytes
SHA-256: d17075f12144a18c84348a7748cdd0ce16d7277284b9eb7ef807fd303b284671
font_01_sfnt_off0000fd86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD86 12524 bytes
SHA-256: bb68ba53e88d1ff3b685dc1e01ee52864b6402127f694953b05f2eb65cf447ab

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