Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4815934fce7de07…

MALICIOUS

PDF

69.0 KB Created: 2021-02-25 15:28:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 1b507ee0f0c3cff2a0736e0c48e76ca8 SHA-1: 7a148fb07528d5f549a5cfea59038716807b335c SHA-256: e4815934fce7de073a03359c7784dfe599d379e00da1a30b3171b173446ecc00
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics as a link farm, containing numerous external links to disposable hosting services. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. The document body is heavily obfuscated and contains metadata that does not align with typical document content, further suggesting a malicious purpose.

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://baarspo.ru/wb?keyword=big%20green%20egg%20eggniter%20electric%20fire%20starter PDF link annotation
    • https://babiweperes.weebly.com/uploads/1/3/5/3/135347107/7d089876b2e.pdfIn PDF document text
    • https://zekigoduse.weebly.com/uploads/1/3/4/3/134336209/6708590.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407733/normal_5fe8203a6044f.pdfIn PDF document text
    • https://cdn.sqhk.co/jawubibegeba/ji5rheA/incharge_debt_solutions_bbb.pdfIn PDF document text
    • https://bajumavo.weebly.com/uploads/1/3/4/4/134486103/4595799.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366043/normal_6028ccaf06d1d.pdfIn PDF document text
    • https://wosumugip.weebly.com/uploads/1/3/4/8/134867897/vosobusu-goxazoxi-bujuxerig-dunasuzu.pdfIn PDF document text
    • https://lajidusok.weebly.com/uploads/1/3/1/0/131070852/rugesezolo.pdfIn PDF document text
    • https://terigemi.weebly.com/uploads/1/3/1/8/131856376/lezumetofonov.pdfIn PDF document text
    • https://cdn.sqhk.co/wobuwozavenu/Xihf1PF/gujufivanovit.pdfIn PDF document text
    • https://cdn.sqhk.co/vinasujitupe/hbcjfRt/monkey_go_happy_ninja_hunt_2_flash_game.pdfIn PDF document text
    • https://cdn.sqhk.co/pigevikuwi/aibheVw/51504748959.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
    • http://laraxeramamat.rf.gd/tutorial_sql.pdfIn PDF document text
    • http://katezoluvezile.epizy.com/23738842602.pdfIn PDF document text
    • http://xegukamadoso.epizy.com/study_guide_for_the_book_animal_farm.pdfIn PDF document text
    • http://guwibigebozodeg.rf.gd/stormzy_new_album.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c401.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC401 4776 bytes
SHA-256: 9cc759e86a5503629710e6ab51dd337714884304dade5934a8b7d09722893d71
font_01_sfnt_off0000d445.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD445 10752 bytes
SHA-256: eefecad77a61e89f615cbeeb73dcd91437a5da69b035c32cc7a4172b9bdc2395
font_02_sfnt_off0000f8d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8D2 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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