Malicious PDF — malware analysis report

Static analysis result for SHA-256 e01fd162d0b1e5ff…

MALICIOUS

PDF

72.0 KB Created: 2021-03-29 00:27:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 57ab6687a6bd5fef9740d402670da084 SHA-1: 3329ce8fd3d370c061e9e7fa6fa93eeeffd8dfb5 SHA-256: e01fd162d0b1e5ff35c8c63ea4873c239fd9334a42259501b45460dc41d0bc5d
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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://golowaki.ru/strik?utm_term=harry+potter+2020+advent+calendar+day+20 PDF link annotation
    • http://ketadiets.site/wobubofalezukeqcbi6.pdfIn PDF document text
    • http://nomofugosep.22web.org/fevolamizonir.pdfIn PDF document text
    • https://cdn.sqhk.co/dusaradezat/je12gin/hidden_valley_ranch_seasoning.pdfIn PDF document text
    • https://cdn.sqhk.co/keridola/bX1uEig/gem_mine_in_hudson_florida.pdfIn PDF document text
    • http://tafasizogir.22web.org/brachial_plexus_injury_exercises.pdfIn PDF document text
    • http://bomaduworofa.medianewsonline.com/rorokodaxivujokisijunulu.pdfIn PDF document text
    • http://verifiedbadges-form.com/el_principe_de_la_niebla_chapter_summaryvvaz1.pdfIn PDF document text
    • https://cdn.sqhk.co/xajegakagiz/4WttibK/fifunan.pdfIn PDF document text
    • http://naturaitalia.space/26980949086h2rgl.pdfIn PDF document text
    • http://faceskinagainbeauty.xyz/human_geography_meaning_in_tamilko14c.pdfIn PDF document text
    • http://veruvipavopa.getenjoyment.net/21494054642.pdfIn PDF document text
    • http://nonly.xyz/mnemonic_to_remember_resistor_color_code96cn3.pdfIn PDF document text
    • http://pibarulajido.getenjoyment.net/23407680479.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://5548a280-a194-4776-8019-0e256783c1fa.filesusr.com/ugd/f2c1dc_1120d647ba854b1bb4c510c79d75bde6.pdf?index=trueIn PDF document text
    • https://84d5b3ab-51dd-4312-87b7-51df18fb3b26.filesusr.com/ugd/9ea9b6_91d35db8b2c745a0bed9a4183de4df55.pdf?index=trueIn PDF document text
    • https://cf2e1f24-e5f1-4289-9567-3affce9c164e.filesusr.com/ugd/a4ea6c_098d0e67f4fe4d9e9f4536b8080133bd.pdf?index=trueIn PDF document text
    • https://88749095-6fd7-453f-8e8a-15b48fe47dd1.filesusr.com/ugd/e4d7df_16e5b488b7374793952ca59c062c1108.pdf?index=trueIn PDF document text
    • http://vezuxafafifobo.epizy.com/50787541604.pdfIn PDF document text
    • https://45ae50e1-98a8-4501-9ad6-fc0df438eb43.filesusr.com/ugd/b16523_4fe06a17166e41ea9f513939d7d6ee99.pdf?index=trueIn PDF document text
    • https://ede36962-9452-4451-b182-fa4236ba9bc6.filesusr.com/ugd/83b1b3_26d0197a6fa148c0b3c133fae3623025.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_off0000da8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA8B 5288 bytes
SHA-256: 0fc1b31e97535f7e7c0681389b8a31351e3e99432a3b4b6527c2a8b15ba958b9
font_01_sfnt_off0000eca3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECA3 11216 bytes
SHA-256: ee40f31634b49672e3671705a6b2c610f688a8cc9ca898acfd3fe7e7ccdaa308

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