Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c03bd443e413b03…

MALICIOUS

PDF

66.4 KB Created: 2020-11-09 23:46:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 7e55840c4ae069aaac64f568a0b847bd SHA-1: c360d0742820e18b77d442b9f6a1f868315e21a2 SHA-256: 4c03bd443e413b0313b23014928f74e85f023e6857d9c01ac02622c4ecc3138f
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous embedded URLs, many pointing to disposable hosting services, suggesting a link farm or phishing attempt. The primary URL, 'https://trafficel.ru/123?keyword=kizi+4+games+unblocked', appears to be a lure for game-related content, likely to redirect users to a malicious site.

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://trafficel.ru/123?keyword=kizi+4+games+unblocked PDF link annotation
    • https://roderisagewap.weebly.com/uploads/1/3/4/5/134507489/junagenewitife.pdfIn PDF document text
    • https://navubenawegef.weebly.com/uploads/1/3/4/3/134320789/biwuvifukajibif-judoridop-virutubo.pdfIn PDF document text
    • https://pobufulali.weebly.com/uploads/1/3/4/4/134494274/vadifiga.pdfIn PDF document text
    • https://lituveso.weebly.com/uploads/1/3/4/3/134362288/a162cb1cd1d700a.pdfIn PDF document text
    • https://kulinamolusamu.weebly.com/uploads/1/3/4/2/134234583/9176306.pdfIn PDF document text
    • https://wosezobar.weebly.com/uploads/1/3/1/8/131856012/lopajopusi_kejojovip_kokuvu_futorotijim.pdfIn PDF document text
    • https://kutusavirub.weebly.com/uploads/1/3/4/2/134265758/visedebuku.pdfIn PDF document text
    • https://ziripovopibew.weebly.com/uploads/1/3/0/8/130874468/e0fca58.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/8eddd56f-7a63-4e50-84ee-1237df5e8066/8228454574.pdfIn PDF document text
    • https://s3.amazonaws.com/sumesawoxajew/zidutos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2af6e841-64ab-4149-b55b-b8020c2b51f5/19095095613.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb04acc7-30d7-4123-900d-b63789bb3d0b/brown_eyed_girl_drum_sheet_music.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8628bd48-9bae-4baa-b3e1-c1f385ea4dee/broward_county_tax_deed_auction.pdfIn PDF document text
    • https://s3.amazonaws.com/dubiditiginowo/combining_sentences_worksheets_grade_2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75139de7-3857-41c6-906c-7138efee3f86/minnesota_open_enrollment_for_medicare_2020.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ba85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA85 5276 bytes
SHA-256: 8abb3ec8ab23841a33d5b775ed8a6932cc1177f4808d7ef9e5b75d41b6484abc
font_01_sfnt_off0000cc61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC61 9956 bytes
SHA-256: 8586922e1b7b5891374d62dcdd2aae3bb15c0b393152eba0b9ddc5146d25d8af
font_02_sfnt_off0000ee72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE72 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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