Malicious PDF — malware analysis report

Static analysis result for SHA-256 ade3038dd56e0df1…

MALICIOUS

PDF

84.3 KB Created: 2021-06-10 10:05:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 2d8a6961cbf3e6b568bad1d1021822e8 SHA-1: 2b289d0d07a97374ad58b2f7187af82c6b626b77 SHA-256: ade3038dd56e0df1131c625e2e61ec76b679994414694a933bb73d44666bdcbf
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://crysiq.ru/pbw?utm_term=wow+assa+rogue+pvp PDF link annotation
    • https://vodivabowadabi.weebly.com/uploads/1/3/4/8/134877230/fevuno.pdfIn PDF document text
    • https://maxanijalezo.weebly.com/uploads/1/3/2/3/132303118/6279354.pdfIn PDF document text
    • https://nikovazof.weebly.com/uploads/1/3/2/6/132682709/94a85b6a9dc7.pdfIn PDF document text
    • https://nitenativab.weebly.com/uploads/1/3/4/6/134698737/kapasurotemasu-kakabu.pdfIn PDF document text
    • https://padipemoton.weebly.com/uploads/1/3/0/7/130739419/1931795.pdfIn PDF document text
    • https://nabaladeso.weebly.com/uploads/1/3/1/4/131438379/4564371.pdfIn PDF document text
    • https://larebefol.weebly.com/uploads/1/3/4/6/134691273/fuwivelenirebav.pdfIn PDF document text
    • https://jokozoxusatolof.weebly.com/uploads/1/3/1/0/131070378/dibanod-nilako.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://natutaliva.pbworks.com/w/file/fetch/144539076/whats_the_difference_between_tendonitis_and_tendonosis.pdfIn PDF document text
    • http://busututesemo.pbworks.com/f/supojevipopavimubupupiz.pdfIn PDF document text
    • http://nefusim.pbworks.com/w/file/fetch/144745818/how_to_build_ikea_poang_chair.pdfIn PDF document text
    • http://lomexalipele.pbworks.com/f/37977539312.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7bd7bb20-a05f-44a3-b00a-e094c2cf05e0/61406238904.pdfIn PDF document text
    • http://wixugigir.pbworks.com/w/file/fetch/144573222/40776038194.pdfIn PDF document text
    • http://mefijunov.pbworks.com/f/phonics_activities_for_kindergarten.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c1783a6-4aeb-4da5-b125-5dc1a70538c3/derejobupipubeworajira.pdfIn PDF document text
    • http://bowawesup.pbworks.com/w/file/fetch/145010436/shortcut_print_area_excel.pdfIn PDF document text
    • http://lagawiwefe.pbworks.com/w/file/fetch/144517572/fema_nims_is_100_c_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d6530f9-e060-4570-9f78-eebb97298d94/cerebral_palsy_meaning_in_tamil_translation.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/caaa8144-7107-48c7-9824-d45fdea36105/how_to_get_dark_theme_on_android.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_off00010b50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B50 5120 bytes
SHA-256: 2e6c50245770db6366e53f1065c55fbbdcb3529f7b9b9c92f11e43ea65a1fc86
font_01_sfnt_off00011cec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CEC 11196 bytes
SHA-256: 693dd941b27551ad573b760f7563923b1eeb83b925630a376ce6c78152eec6f6

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