Malicious PDF — malware analysis report

Static analysis result for SHA-256 926166c814c7ee25…

MALICIOUS

PDF

79.6 KB Created: 2021-04-07 04:10:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: aaada3bb8fb0059f84bf07153701ae23 SHA-1: 5ce4660b0b2b9531523fe3ea4a27ca6b7087be10 SHA-256: 926166c814c7ee259a19d80127c5b638e2e9411d711a675b25702f559e6c4221
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 0.9993

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://leonvi.ru/award?keyword=cell+cycle+coloring+worksheet+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4458826/normal_600b5c1dd4916.pdfIn PDF document text
    • http://ladokewukuman.iblogger.org/bifilar_suspension.pdfIn PDF document text
    • http://kvadro63.ru/whirlpool_4.3_cu_ft_he_top_load_washer_wtw5000dw_reviewsxytny.pdfIn PDF document text
    • https://cdn.sqhk.co/kivipemo/igjogi7/nixotaxap.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380531/normal_605072778e501.pdfIn PDF document text
    • https://cdn.sqhk.co/pajokiman/eTevgeY/electric_guitar_learning_book.pdfIn PDF document text
    • https://cdn.sqhk.co/xaxamipuxum/hRQhjjf/zero_gravity_runner.pdfIn PDF document text
    • https://cdn.sqhk.co/kufomopinu/ggggcgh/60824421556.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367017/normal_6033666920cbb.pdfIn PDF document text
    • http://spainwow.pro/29723289251dxod4.pdfIn PDF document text
    • http://lodazumutedine.iblogger.org/28453056613.pdfIn PDF document text
    • https://cdn.sqhk.co/mizenopujoli/QhjGthi/89098156385.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443814/normal_5ff87ea748cf2.pdfIn PDF document text
    • http://zuvels.xyz/sorikopanijoruvb2sp.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411219/normal_5fe6621fc772c.pdfIn PDF document text
    • https://cdn.sqhk.co/disovaje/icjdtha/kamiko_switch_guide.pdfIn PDF document text
    • http://rubeatyshop.xyz/vafiviku2q5u.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mulozeraxepe.epizy.com/laluketuluvaxazavinozoda.pdfIn PDF document text
    • http://zivuvosiz.epizy.com/tojefilonorazabawufufev.pdfIn PDF document text
    • http://fuvozakini.epizy.com/statistical_analysis_of_medical_data_using_sas.pdfIn PDF document text
    • http://foxujekuvet.epizy.com/ocr_sociology_for_a_level_book_1.pdfIn PDF document text
    • http://zilaxeputeso.epizy.com/digestive_system_test_questions_and_answers.pdfIn PDF document text
    • http://gipuzasidu.rf.gd/quran_with_urdu_meaning_word_to_word.pdfIn PDF document text
    • http://xowuxojugo.rf.gd/jawbone_up_app_store.pdfIn PDF document text
    • http://soxomidil.epizy.com/91671519743.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f685.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF685 5368 bytes
SHA-256: db8be32c03bcdf05be6f30e26a677b5f13a29772d549537ccf37651773d1c455
font_01_sfnt_off000108de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108DE 11268 bytes
SHA-256: 026eb62ff128f5be7cd0aa982d1a0a4647a8e58022d2eb718cb7cb09bb693709

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