Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb304b434230aa0e…

MALICIOUS

PDF

68.4 KB Created: 2021-04-01 22:48:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: fe5322726d35d121c9be794837100e13 SHA-1: 50ab38a7341667b954e66d17443ece3435706f58 SHA-256: eb304b434230aa0e97774b6c736e12db60f61efda5f44b75ad67e65b75f43b2a
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

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 0.9998

Heuristics 6

  • 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 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://lozipotod.ru/strik?utm_term=irobot+960+parts+diagram PDF link annotation
    • https://cdn.sqhk.co/wusuzevomo/ijejajb/bounce_exercise_ball_pregnancy.pdfIn PDF document text
    • https://cdn.sqhk.co/fapetemiji/hyd3quA/big_bike_magazine.pdfIn PDF document text
    • https://lewumime.weebly.com/uploads/1/3/5/2/135297270/eed3f0308.pdfIn PDF document text
    • https://cdn.sqhk.co/puxezuxivas/hSBgehF/best_video_calling_device_for_seniors_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/duponetix/icu2Wym/samsung_health_heart_rate_monitor_not_working.pdfIn PDF document text
    • https://logesili.weebly.com/uploads/1/3/5/3/135389335/3805157.pdfIn PDF document text
    • http://fikipasofesopem.22web.org/74990406511.pdfIn PDF document text
    • http://fisefer.22web.org/83905808010.pdfIn PDF document text
    • https://cdn.sqhk.co/lepavenujal/iibiahc/77359627570.pdfIn PDF document text
    • https://cdn.sqhk.co/kinibemazoz/Lijchgp/mens_short_hairstyles_for_thick_hair_oval_face.pdfIn PDF document text
    • https://suwudaxodorepe.weebly.com/uploads/1/3/4/8/134885248/nisitipazika.pdfIn PDF document text
    • https://cdn.sqhk.co/pimupigedu/igiichg/5773231222.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/71259639-37e9-43c9-bcee-ae490206eff8/les_vacances_du_petit_nicolas_gratuit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de422da0-11fe-4d3c-8f25-3bd1cb16ebe5/xoxuwagenuxatedesunakat.pdfIn PDF document text
    • http://givoraxanusupe.rf.gd/yamaha_rxv377_arc.pdfIn PDF document text
    • https://s3.amazonaws.com/kefefetafij/l_s_theme_clarinet_sheet_music.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/218010e3-2a4e-49fe-a980-69b96e6091e1/dojukutowonavegawe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ba67177-da4b-419b-bdb1-aa669c106809/the_obstacle_is_the_way_best_quotes.pdfIn PDF document text
    • https://s3.amazonaws.com/juvosi/91966945505.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_off0000ce31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE31 5776 bytes
SHA-256: aebaedf6fe9e2adb2ac21ea456304ae73756349a821fe890b6f3250c770bfba5
font_01_sfnt_off0000e1b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1B6 10320 bytes
SHA-256: f7032f1f39757390392becf42f4e199ca90cc473a65d0f69a9267f62f02c156d

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