Malicious PDF — malware analysis report

Static analysis result for SHA-256 6097f4c0b79a3788…

MALICIOUS

PDF

74.8 KB Created: 2021-03-24 03:18:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 1906d46b02233df90728174822e778a1 SHA-1: 195dc25004cb88bcfcda7735d802397fd3786585 SHA-256: 6097f4c0b79a37881d1fd0b7220bb5178ce3158e2477cafb44153d2976a35208
126 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many pointing to disposable hosting, and a heuristic identified it as a link farm. The document body, though heavily obfuscated, contains text related to 'Stanley fatmax 1000 reviews', suggesting a lure to disguise the malicious links. No scripts were extracted, but the overall structure and URL distribution are consistent with phishing or scam campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://druttle.ru/strik?utm_term=stanley+fatmax+1000+reviews PDF link annotation
    • http://pravagims.net/tera_endless_war_reviewx8muc.pdfIn PDF document text
    • http://sebevifa.getenjoyment.net/perimeter_of_polygons_worksheet.pdfIn PDF document text
    • http://tesopinafap.22web.org/13634868335.pdfIn PDF document text
    • http://dipenoguzel.sportsontheweb.net/75188168240.pdfIn PDF document text
    • http://kimidenexikox.getenjoyment.net/past_simple_and_past_continuous_story_exercises.pdfIn PDF document text
    • http://ditoterelutas.sportsontheweb.net/87858382482.pdfIn PDF document text
    • http://itgermany.net/lodupomevbw019.pdfIn PDF document text
    • http://ruvogodozipabiv.scienceontheweb.net/annapurna_devi_ashtothram_in_telugu.pdfIn PDF document text
    • http://good-production17.site/harry_potter_complete_8-film_collection_blu-ray_steelbooki068i.pdfIn PDF document text
    • http://phtech.site/do_i_watch_fma_or_fmab_firstmq9v7.pdfIn PDF document text
    • http://magexaxajatadog.getenjoyment.net/93142479014.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cb2d4818-2134-4ea5-ae57-1bc45cfc4292.filesusr.com/ugd/7e787c_4ecdf3e2f3124ea8811b2119edb5728a.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0fb0abe-288c-479e-8afd-2d6cbf59b1cd/wixaradenosenetutidebog.pdfIn PDF document text
    • https://d8d078ea-10ec-4787-8e21-ef6e32b87a24.filesusr.com/ugd/8f6098_a02b245d83cd45b6b40639ae6b326602.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/0afd8354-6915-415b-8996-95140cbcfeaa/63546127538.pdfIn PDF document text
    • http://kemibibej.rf.gd/antiphospholipid_syndrome_article.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6379e48c-7663-4489-8633-f4dd4731f522/bipijisul.pdfIn PDF document text
    • https://61736296-a7da-4228-a4f2-5a582bd9a3aa.filesusr.com/ugd/1c12ee_f0e900e24f034e6ab303cd75c8fcc441.pdf?index=trueIn 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_off0000e68a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE68A 5532 bytes
SHA-256: 251e8f527b192b1cb488913bf9fe5ec98b949f9943d31dc7c03ad8803464f10a
font_01_sfnt_off0000f966.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF966 10636 bytes
SHA-256: f48aaf5604b1a1a9f572d40ba9dd51881af98156fa5934be78c739a59cbd014a

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