Malicious PDF — malware analysis report

Static analysis result for SHA-256 02faad40c42fc3be…

MALICIOUS

PDF

76.6 KB Created: 2021-03-05 22:18:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: b5d8299ac9fed351aba041ea9b767e48 SHA-1: f939950a22ebf2e74dcfb345b81e7927af4bea1f SHA-256: 02faad40c42fc3be396cd0dfac3a46b32039a93b1d86b49a8869f545a340adaf
126 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as a phishing trojan and a machine learning classifier indicated a high probability of maliciousness. It contains numerous embedded URLs, with one specifically pointing to 'maypoin.ru/award', suggesting a lure to a phishing or malware distribution site. The document body is heavily obfuscated, but the presence of PDF-specific heuristics and the overall verdict strongly indicate a malicious intent, likely related to phishing or malware delivery.

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://maypoin.ru/award?keyword=solid+state+physics PDF link annotation
    • http://copyrightsupporteds.com/identifying_accidentals_music_theory_worksheet_answersnmv7e.pdfIn PDF document text
    • https://cdn.sqhk.co/neseleko/fc8frjE/52255375560.pdfIn PDF document text
    • http://cosmosqrab.online/kebuminuruvigererejixg18m.pdfIn PDF document text
    • https://cdn.sqhk.co/nodezaneripe/dTxxig6/mekizo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402737/normal_6017d4130bb68.pdfIn PDF document text
    • https://cdn.sqhk.co/pesasotiro/ciehjhc/launcher_oreo_8._1_premium_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/zowolanazew/ieo1QYV/7264755937.pdfIn PDF document text
    • http://natlegend.space/the_developing_person_through_childhood_and_adolescenceir3zs.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428341/normal_601a11a7b740e.pdfIn PDF document text
    • http://bomegidedob.22web.org/how_to_clean_old_gas_heaters.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388407/normal_60156395d7af0.pdfIn PDF document text
    • http://lovelid.xyz/xerox_workcentre_7545_black_toneryuuh0.pdfIn PDF document text
    • http://hookup754.fun/english_file_upper_intermediate_thire6vd3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://a435df4f-13ac-4aa8-a5cb-040d814bed0a.filesusr.com/ugd/e3c460_672ef6c1016a4d7e81331342fef8307f.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/113b0080-1cd5-4190-a6ae-4aaf8721690f/hp_laserjet_p2015_symbols.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91884092-236b-476a-9ddc-575bb82e9e64/tawife.pdfIn PDF document text
    • http://tufexulirepa.epizy.com/tu_vs_tu_with_accent.pdfIn PDF document text
    • https://413f70bc-0247-4a04-a3fc-eabb14e2b93f.filesusr.com/ugd/f18ee6_cb8f5ac0dff847158ac87b3b01127109.pdf?index=trueIn PDF document text
    • http://nekabet.epizy.com/vietnam_e_commerce_report_2015.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d01ef423-55e2-48e4-bc97-7742806f80ee/55855263078.pdfIn PDF document text
    • https://5a8aee2d-3d68-4c09-98ed-743c9c56d6fd.filesusr.com/ugd/460efe_f10f5c52e2474d7c9d311fd95b4001f0.pdf?index=trueIn PDF document text
    • https://e2604e0b-f95a-4acb-b53f-a7db3827b2a1.filesusr.com/ugd/225520_00e74f6346b9451b8281141a5efc319d.pdf?index=trueIn PDF document text
    • http://foxesixa.epizy.com/fejebijunixirosowu.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_off0000f027.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF027 5272 bytes
SHA-256: 987dd32753e6a5edf57fe3ed9101283e09aa5ffbeb54f179e5fc160d37b2db38
font_01_sfnt_off00010218.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10218 10272 bytes
SHA-256: eb8844927ca7b14338b4fb28a8112fd8af73a3700fbb7ec37aa19bacf07c2a54

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