Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2cf0fd5b42b0107…

MALICIOUS

PDF

75.2 KB Created: 2021-02-15 12:07:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 5df01104eb84f6293f07902020b8600d SHA-1: a3fa4cab45546d9f5cc281dc12f50e40576c6eb1 SHA-256: f2cf0fd5b42b0107f00f26d45cce04751a0282e6a55854c1d9a201838857c756
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. It contains a large number of embedded URLs, many pointing to disposable hosting, suggesting a phishing or malware distribution campaign. The presence of 'utm_term' parameters in some URLs indicates a tracking or redirection mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://bologen.ru/strik?utm_term=is+ben+10+on+hbo+max PDF link annotation
    • http://gladkoe-telo.xyz/consumer_behavior_solomon_12th_editixh60a.pdfIn PDF document text
    • http://proita.space/mariage_de_figaro_acte_5_scene_3nmarg.pdfIn PDF document text
    • http://cafechorsu.ru/surawabusajizevexaxawidi9yvqw.pdfIn PDF document text
    • http://lasleymarkt.ru/pamodunigofotowh2cv.pdfIn PDF document text
    • http://arendagg.xyz/eu_gmp_guidelines_for_hvact2y7j.pdfIn PDF document text
    • http://upgrade4me.com/wrong_turn_full_movie_isaiminio16xu.pdfIn PDF document text
    • http://igonlinesupport.com/kaiser_permanente_careers_log_inpqa30.pdfIn PDF document text
    • http://porn77.design/365711910347kxb5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444113/normal_602839c41b599.pdfIn PDF document text
    • http://devgm.design/towonukamomubuhjd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459631/normal_5feea53a92487.pdfIn PDF document text
    • http://trokot-new.online/naza_lite_to_v2_hackmjp0h.pdfIn PDF document text
    • http://drenajkrasnodar.ru/tell_us_about_yourself_interview_question_answert9ct8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459787/normal_60243f4d33c6f.pdfIn PDF document text
    • http://steelsho3.club/razer_synapse_download_win_102ozme.pdfIn PDF document text
    • http://sudejiw.22web.org/movimiento_uniforme_fisica_significado.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://s3.amazonaws.com/zidosozawok/33741192613.pdfIn PDF document text
    • https://s3.amazonaws.com/xewamejixolefaj/394622521.pdfIn PDF document text
    • https://s3.amazonaws.com/feborobegibew/nolavivel.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
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d96d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD96D 5136 bytes
SHA-256: 14e54802970fc17e40b93018db3705a0cb4a7549a9d6bf9b775674b61fe80477
font_01_sfnt_off0000eabe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEABE 6148 bytes
SHA-256: 149738eb3e1d0bfb4a5732e89a115965e6f0cf3fc4971c694d3ce3619176544d
font_02_sfnt_off0000fa9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA9D 10644 bytes
SHA-256: 44cc7e3efeb7ac7367424dabaaf00e41f3d68cf7df951fb81d21c646ea26a25d

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