Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a27e21ce6ac71f9…

MALICIOUS

PDF

92.3 KB Created: 2021-03-09 12:26:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: fa61dd230ba8a462a611e318a71a0a8d SHA-1: bee935efce176d5f6aabb3c819a9f9b0444a0931 SHA-256: 8a27e21ce6ac71f9df77a121e30827f2f3bed87d4ee978dddff224b8c56e9719
126 Risk Score

Malware Insights

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

The PDF contains numerous external URIs, with one specifically pointing to a suspicious domain ('resalured.ru') that is likely part of a phishing or scam campaign. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to malicious content, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://resalured.ru/award?keyword=chateau+de+versailles+histoire+pdf PDF link annotation
    • http://firstreadersclub.com/65_inch_skyworth_tv_price_at_makrofg1z0.pdfIn PDF document text
    • http://ogranicbio.fun/calligraphy_tutorial_bookp1akl.pdfIn PDF document text
    • http://lafilubepojev.scienceontheweb.net/is_the_silence_of_the_lambs_book_good.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475580/normal_5ffe7bf8afe69.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489245/normal_6020c1d0cf094.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377931/normal_5fd7835d88bbf.pdfIn PDF document text
    • http://fexevewuli.mypressonline.com/how_many_times_a_day_can_you_trade_on_td_ameritrade.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393626/normal_5fdd95a199613.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373301/normal_5fdc81391eb50.pdfIn PDF document text
    • http://wojurimaxab.mywebcommunity.org/diablo_2_hero_editor_plugy.pdfIn PDF document text
    • http://kumajamefe.getenjoyment.net/44593616463.pdfIn PDF document text
    • http://sogejovep.mypressonline.com/what_are_the_three_basic_parts_of_a_newspaper_article.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453560/normal_6012334c046e7.pdfIn PDF document text
    • http://foodguideblog.com/lightsaber_forms_star_warst14be.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413712/normal_602b4aad248e6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412170/normal_602ec2e8e8c5f.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/114eb5a3-7616-4509-8bfd-136141ec3d7d/83907660212.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/72fbaa79-3da3-460e-8d26-0bf7d0d41416/53464275234.pdfIn PDF document text
    • http://bamonoxo.onlinewebshop.net/we_the_animals_justin_torres.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a10c28ec-5822-427a-9db6-c89e6e0d0b71/ramifefinipopafotane.pdfIn PDF document text
    • http://tebaputazaxuva.myartsonline.com/20363437305.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f9596c3-1ba5-4eaf-b87a-5b9d6b92bbc6/38423858414.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d46432b4-492b-43db-b3e3-9d3fb6f9d81b/how_did_zeus_interact_with_humans.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_off0001293c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1293C 5096 bytes
SHA-256: 536d9e68ca91c3c703d345818683f9d643982956e51da018261a46f8a6bfb6db
font_01_sfnt_off00013a8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13A8D 13072 bytes
SHA-256: 482aaf4ecfb4635304be73fa921c59d6368200fc3c8c9e418e5ebd3c326f9efb

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