Malicious PDF — malware analysis report

Static analysis result for SHA-256 022c13e01d549d5b…

MALICIOUS

PDF

88.7 KB Created: 2021-03-16 02:40:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: d3afd7a75f774bf4000a23d96fcd10a8 SHA-1: 6438125f4e3a8693aea6196b21d90be949e73d71 SHA-256: 022c13e01d549d5bb4c5f942bd88b909ffc74c654b9546dd1d66b9c0b8c87f02
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The document functions as a link farm, directing users to numerous external URLs, one of which is `https://ponafet.ru/strik?utm_term=shepherd+the+flock+of+god+2019`. The presence of embedded URLs and the overall structure suggest a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://ponafet.ru/strik?utm_term=shepherd+the+flock+of+god+2019 PDF link annotation
    • https://cdn.sqhk.co/metexemoraga/QMYuKjg/dwayne_johnson_height_in_feet_and_inches.pdfIn PDF document text
    • http://dektesheff.xyz/vuwanalonojonuxotokerimazo9dw.pdfIn PDF document text
    • http://poradoit1.site/46968145566dhru5.pdfIn PDF document text
    • http://axecheat8.xyz/shark_genius_steam_mop_soapaft77.pdfIn PDF document text
    • https://cdn.sqhk.co/monasomeb/lgjghgd/alien_outbreak_escape_room_edmonton_ab.pdfIn PDF document text
    • http://begedotupatato.66ghz.com/27131753320.pdfIn PDF document text
    • http://palawawez.mypressonline.com/advanced_javascript_syllabus.pdfIn PDF document text
    • https://cdn.sqhk.co/zofagopipowi/i0gcXji/96415966887.pdfIn PDF document text
    • http://fikosarodone.medianewsonline.com/korean_alphabet_and_how_to_pronounce_them.pdfIn PDF document text
    • https://cdn.sqhk.co/notudubugu/igZRjOr/reading_comprehension_worksheets_for_6th_grade_students.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dogirajuwuxo.epizy.com/98889096676.pdfIn PDF document text
    • https://aa514bbb-a96e-4bc9-8ff3-0ca2edd1104f.filesusr.com/ugd/3fc21f_b332ad67edb1424fb83c4c0fd9d1e600.pdf?index=trueIn PDF document text
    • https://11f44e1d-c86f-4be6-baa1-90970e7c24f5.filesusr.com/ugd/a298ce_4dc9f3f007be4e5a94c425a6ad2e6021.pdf?index=trueIn PDF document text
    • http://zobemodorujo.rf.gd/60442942234.pdfIn PDF document text
    • https://0d801636-e20c-47cf-9654-f2c4f0d28fb9.filesusr.com/ugd/2e7c9c_48192bb48ecf488484002472f55ca058.pdf?index=trueIn PDF document text
    • http://rewuwuja.onlinewebshop.net/tecsun_pl_660_deutsche_anleitung.pdfIn PDF document text
    • https://s3.amazonaws.com/pizexopenaxu/marshall_cavendish_science_psle_revision_guide.pdfIn PDF document text
    • http://sulorowanutabu.atwebpages.com/pathogenicity_of_fungi.pdfIn PDF document text
    • http://didajuna.rf.gd/16623651094.pdfIn PDF document text
    • https://a40b6db0-1679-4e03-879f-ac5827b9aa7d.filesusr.com/ugd/dba42a_b1b3988282594160b19cf6dd845f4455.pdf?index=trueIn PDF document text
    • https://dacf5b84-f80e-4bd8-bb7f-22aad20a1cd8.filesusr.com/ugd/285be4_6c6afa0ebe3a46f8a8fa452fa578e757.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zibenoroduzuw/ar_camera_app_apkpure.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_off00011b4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B4B 5676 bytes
SHA-256: 418fbdfed54cdce4f7fd363ccd6e8f12f61faaa79ae949b1882932dd5bd0235b
font_01_sfnt_off00012eab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12EAB 10948 bytes
SHA-256: 0ac69f4bcfbb628edadf9df824069c9637fa61ba41d24d0e581a5c41ce1fe223

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