Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea1feed7eaabff7a…

MALICIOUS

PDF

77.4 KB Created: 2021-02-26 21:03:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: c8795179c4a6121b7ed1ae03a1bad754 SHA-1: 713da629aea492bc1c9fccb66e2fac535e9cf01f SHA-256: ea1feed7eaabff7af40004470bb11937df9bf1042e0a5969644b8c35736e42a5
146 Risk Score

Malware Insights

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

The file was detected as a phishing trojan by ClamAV and flagged by an ML classifier. The 'SE_CALLBACK_LURE' heuristic indicates the document is designed to trick users into calling a phone number, consistent with callback phishing or tech-support scams. The embedded URL 'https://maypoin.ru/award?keyword=craftsman+battery+charger+lowe%2527s' is likely part of the lure or a redirection to malicious content.

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 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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=craftsman+battery+charger+lowe%2527s PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4380088/normal_6002894ba42e9.pdfIn PDF document text
    • https://cdn.sqhk.co/wobuwaseja/Phjhcns/skull_wallpaper_hd_4k.pdfIn PDF document text
    • https://cdn.sqhk.co/tofatuxurejo/BYjhjgg/45003613995.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4499282/normal_601bd19e89c9c.pdfIn PDF document text
    • http://reduslim-europa.site/gipuvugasasubotavoguwetopfifrr.pdfIn PDF document text
    • http://begemot.space/ielts_speaking_activities1nlep.pdfIn PDF document text
    • http://datinge.site/libro_el_alquimista_de_paulo_coelho502st.pdfIn PDF document text
    • http://cartest.pro/19602760055t2v3f.pdfIn PDF document text
    • https://mijevofere.weebly.com/uploads/1/3/1/6/131606011/3528664b.pdfIn PDF document text
    • https://cdn.sqhk.co/timafewa/jif8Bhg/dsi_2018_papier_adresse.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/mejifavo/sasol_bursary_application_form_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/firigugixujotov/aconteceu_em_woodstock_dublado_1080p.pdfIn PDF document text
    • http://sefenepisepaje.rf.gd/wedejemijilo.pdfIn PDF document text
    • http://zanukabijegur.rf.gd/iguana_food_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/gosete/borerixetalukanuzom.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_off0000f36e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF36E 5568 bytes
SHA-256: 112effdef7d5e098e0007b0acfa9f65c5367e679de2825e62a7bd60aad206d5f
font_01_sfnt_off00010656.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10656 10112 bytes
SHA-256: 26d002f8fadad55093a062a095abc890fc0c58637e6632305f1a6918e4730c33

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