Malicious PDF — malware analysis report

Static analysis result for SHA-256 848a25a42faa4161…

MALICIOUS

PDF

77.9 KB Created: 2021-03-14 14:41:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 930c48385d3b260666f5085c93031a65 SHA-1: 13151f6414d1f1344d97464f6f8d43c4703ed2cf SHA-256: 848a25a42faa4161bd94d1ce1f6189412b00d013c052d0e8dfd97e546b43e7fb
126 Risk Score

Malware Insights

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

The PDF file contains embedded URLs and is flagged by multiple heuristics, including ML and ClamAV, as malicious. The document body, though heavily obfuscated, suggests a lure related to 'Harry Potter teil 5 trailer deutsch'. The presence of numerous external URIs, many pointing to disposable hosting, indicates a link farm or redirection mechanism designed to lead the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://leonvi.ru/wb?keyword=harry%20potter%20teil%205%20trailer%20deutsch PDF link annotation
    • https://fubuzupa.weebly.com/uploads/1/3/5/3/135324320/pupovativeriwasizede.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458634/normal_6026fad718d19.pdfIn PDF document text
    • http://jefaritixe.22web.org/99285830050.pdfIn PDF document text
    • https://sitekitenuzuvi.weebly.com/uploads/1/3/2/3/132303150/033b51c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447265/normal_603c8a4c000e4.pdfIn PDF document text
    • https://vakitisize.weebly.com/uploads/1/3/4/0/134017930/zeleboguwigu.pdfIn PDF document text
    • http://maroron.22web.org/65944315803.pdfIn PDF document text
    • https://kazilapematif.weebly.com/uploads/1/3/5/2/135293457/3c7d35ff9caf7.pdfIn PDF document text
    • https://supadebev.weebly.com/uploads/1/3/2/7/132712355/medevixidodika.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://9e1b5e4e-b4ab-405b-8fdf-b3b6d7b19c28.filesusr.com/ugd/94ea38_a1acc375c35747049f2f86e5775f02ca.pdf?index=trueIn PDF document text
    • http://zusomiverufal.rf.gd/44986197550.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/74134e4d-00af-400c-99f6-7f4e3500a981/2019_toyota_camry_trd_for_sale_near_me.pdfIn PDF document text
    • https://e4034479-4ead-418b-af8c-5be8dc72bdbe.filesusr.com/ugd/1e8759_6955d8d41b1d49fcb300ad71a1db506b.pdf?index=trueIn PDF document text
    • http://rubofad.rf.gd/time_to_answer_complaint_georgia.pdfIn PDF document text
    • http://vimiromomekex.epizy.com/battle_angel_alita_volume_3_cbz.pdfIn PDF document text
    • https://5be7aec3-7d66-433b-ae1d-2bfb807ddf2a.filesusr.com/ugd/24deb6_e45bc2d76a7745cca2e5df6b2a504551.pdf?index=trueIn PDF document text
    • http://xadeboni.epizy.com/7022543878.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e23baebf-1952-473a-a7d2-6ccac99c29c9/a_w_tozer_books_amazon.pdfIn PDF document text
    • https://2e4b0ed6-c237-476e-b23b-7c95f147629f.filesusr.com/ugd/30e930_c72d8893b7bb4a50a61ff7f763ac7312.pdf?index=trueIn PDF document text
    • http://sunusegelu.rf.gd/encyclopdie_de_la_charcuterie_gratuit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bcc10882-bdce-472e-86fe-384be5d3ba5c/chemical_composition_of_crude_oil.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e6f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6F8 5124 bytes
SHA-256: 76ec0748d53c8f803d01de40930df6e9acf047cd30e2f514160c64ec105db246
font_01_sfnt_off0000f881.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF881 10492 bytes
SHA-256: e5df96db8624989b7e3a91b5bae41b332d22e427514468004295fa2e9ba7c49f
font_02_sfnt_off00011c26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C26 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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