Malicious PDF — malware analysis report

Static analysis result for SHA-256 254d4d7120dbf4b5…

MALICIOUS

PDF

85.2 KB Created: 2021-03-16 11:42:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: ddedb2cd21cebc62a3a8bb3bc4af4a2a SHA-1: a4d8f568353b8fa1d9f43f32e9738fda96f06e65 SHA-256: 254d4d7120dbf4b5e8ea0e3918e1a8a8bd774506bdd6c628845e7f55ad9f8d91
126 Risk Score

Malware Insights

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

The PDF file contains multiple embedded URLs pointing to potentially malicious domains, indicated by the 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'ML_NYX_PDF_MALICIOUS' heuristics. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports a malicious intent. The document body, though heavily obfuscated, suggests a lure related to a 'Pokemon white 2 strategy guide pdf', which is a common tactic for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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://zajinet.ru/wix?keyword=pokemon+white+2+strategy+guide+pdf PDF link annotation
    • http://idealslim-italiaoficial.site/rezipixi3ct88.pdfIn PDF document text
    • http://circus.market/viserawukapojejaliey7x1.pdfIn PDF document text
    • http://topcreditcheck.info/irobot_braava_m6_robot_mop_reviewsjf5sv.pdfIn PDF document text
    • http://sevastopol.sale/how_to_work_shark_steam_mopael53.pdfIn PDF document text
    • http://zakozoxutujo.22web.org/mojupejitamemoxuwun.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://uploads.strikinglycdn.com/files/f7e0d228-c90d-40e0-a9d2-7f0f76830766/bosch_silence_plus_46_dba_installation_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0fb71df1-5f9e-4d63-9862-76f151f36de8/93862914231.pdfIn PDF document text
    • https://d4996ccb-aecf-47c4-aab6-3c4fe022e1b7.filesusr.com/ugd/b7ed05_9e6fb10108a7436b9fbaa6124fcd5b2b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/rubidokezive/4k_wallpaper_for_iphone_x.pdfIn PDF document text
    • http://sonogobujajeva.rf.gd/nawisukemifamebi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ede65650-87c7-41ce-b968-da4f3b79d578/betaxovi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a28591f0-2f94-4608-8b1a-1f5816cc5198/7133901847.pdfIn PDF document text
    • https://e8b83640-91e4-44a0-a69f-c2468797902f.filesusr.com/ugd/ee4a13_8fc3a41b445441ab9c95b65b1190d04e.pdf?index=trueIn PDF document text
    • http://kutunuwe.epizy.com/vajizul.pdfIn PDF document text
    • https://33edd578-4186-4695-89f3-f56a5a23fc53.filesusr.com/ugd/f17c08_378922f8525d43ed8c71e2cff3e6fbaf.pdf?index=trueIn PDF document text
    • https://8569cc17-8b2a-4187-ace0-95b0550b99f0.filesusr.com/ugd/d6eede_902d8ad1e98b470a9a47f739b8f3155a.pdf?index=trueIn PDF document text
    • https://781b76d0-895c-4d4e-90f3-491762fad171.filesusr.com/ugd/894952_6a4c11d7bfcf4096889e8877ded472a5.pdf?index=trueIn PDF document text
    • http://lagamifex.epizy.com/1817016452.pdfIn PDF document text
    • https://s3.amazonaws.com/fasudikek/82445938860.pdfIn PDF document text
    • https://e22e8d81-f41f-4d51-abb1-39b19d2d32bb.filesusr.com/ugd/96bf9d_d3a83c22f7ec4c60aa5ee314e0a1e197.pdf?index=trueIn PDF document text
    • https://d848e4b6-662b-4424-a759-963270729452.filesusr.com/ugd/30e015_d2ab44c032174efd969fcfe77014ff7b.pdf?index=trueIn PDF document text
    • https://78e27e65-9996-4239-a63d-7a21722db537.filesusr.com/ugd/03f576_7d8365ec3af04dff8562cc0e8edb5b62.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/nagev/illustrator_isometric_tree_template.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eccc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECCC 5492 bytes
SHA-256: 1bddd25af1e90ef9c16bacebdeb31bfe0079550e65ce1a0fe56aa48b50861b6a
font_01_sfnt_off0000ffaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFAF 5696 bytes
SHA-256: 5fa81096b1f198b8ad558f622dca963b2cf1adf96ec8e3fb937f2d2d833c7362
font_02_sfnt_off000112fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112FC 11104 bytes
SHA-256: 841355f5347dd31086580608486816bf6120cf2444bf47bde8e8e921a6df5ab4
font_03_sfnt_off0001383d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1383D 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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