Malicious PDF — malware analysis report

Static analysis result for SHA-256 e613a294d873e09a…

MALICIOUS

PDF

78.5 KB Created: 2021-03-05 04:33:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: c18402e3b655e5988ae8f765bdd08aff SHA-1: cdcc9174031d80a0886914db81f12a5352e75a0a SHA-256: e613a294d873e09a28d7db60e13dc3ddf8a62d06f854cb0aa064f42afee0f369
126 Risk Score

Malware Insights

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

The PDF file contains embedded URLs that redirect to potentially malicious domains, masquerading as search results for a popular TV series. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest an attempt to exploit user curiosity to visit a malicious site.

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://mezovuduw.ru/award?keyword=jack+reacher+tv+series+season+1+cast PDF link annotation
    • http://dkmz2.club/wevowunilalajuzonylohw.pdfIn PDF document text
    • https://wisejagu.weebly.com/uploads/1/3/4/8/134881465/majataf_zobaguduv_zaxixifiwinozab_solojijudonu.pdfIn PDF document text
    • https://bejutenexej.weebly.com/uploads/1/3/3/9/133997629/pututivejefe-gevupome-wolof-lajiwirebefem.pdfIn PDF document text
    • http://covidcapsule.world/99249463722w5vn5.pdfIn PDF document text
    • http://repaircreditscore.info/practical_psychic_self-defense_for_home_and_office6qol8.pdfIn PDF document text
    • https://nepibosumu.weebly.com/uploads/1/3/4/3/134363752/tagewa.pdfIn PDF document text
    • https://goxatuzibifonev.weebly.com/uploads/1/3/0/7/130739188/wejanunav.pdfIn PDF document text
    • http://prizinsta24.online/zegusisuitx.pdfIn PDF document text
    • https://wiwanozamo.weebly.com/uploads/1/3/4/3/134306351/573275cf401a01.pdfIn PDF document text
    • http://idealica-ordina.site/auto_wallpaper_change_apko9zra.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/28ebee7b-57f2-48b4-853d-cad9dc3e7e2f/what_things_are_bad_for_high_blood_pressure.pdfIn PDF document text
    • http://lefarobi.rf.gd/kiloxakamalogepaketiruwa.pdfIn PDF document text
    • https://s3.amazonaws.com/dudigonifu/sony_android_tv_l_g.pdfIn PDF document text
    • https://s3.amazonaws.com/gurowozenupifi/d_d_3._5_wizard_character_sheet.pdfIn PDF document text
    • http://gipapexof.rf.gd/66515857386.pdfIn PDF document text
    • http://vofuwelezetez.rf.gd/golirarepodawafexuzuv.pdfIn PDF document text
    • http://fepapemifen.epizy.com/63989476680.pdfIn PDF document text
    • http://rivubutapadagar.epizy.com/vemaxadidupe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77bb7f6a-1b31-45b5-a6b3-138bb7cc57f3/lifokufeji.pdfIn PDF document text
    • https://s3.amazonaws.com/rudelazifizuvo/airline_ticket_template_microsoft_word.pdfIn PDF document text
    • https://s3.amazonaws.com/fofeguj/tokesu.pdfIn PDF document text
    • https://s3.amazonaws.com/xazarujokemus/azhar_full_movie_720p_mkv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29f7d3f5-4c2d-4568-ba62-392290cabc4c/worigukiduroronaxozeko.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/328263fb-b7ff-4151-b1a7-6903153205e6/59865740947.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9be42fcb-21a7-4c3d-a50a-4d5dc04993f0/vugowetusefoximofeve.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_off0000f7ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7ED 5020 bytes
SHA-256: f90a396b4a933c494fabf1f2b6c028939763a90c20ef2d0e17c3c3d2ce0b0536
font_01_sfnt_off0001090a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1090A 10428 bytes
SHA-256: 74aed51ddc456a85d5e583f62da42e1133267e554f47623ef03ab3f86f5fafe2

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