Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d54283e551388d0…

MALICIOUS

PDF

103.2 KB Created: 2021-03-20 16:16:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 7fbb628900bd2f6ebfecaa8314089014 SHA-1: 5504994c61d21fc7628953a42249659588fef842 SHA-256: 0d54283e551388d024c53469f8f72c427f1ec3813f85d955c453e62aeb51e348
186 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics identified it as a link farm containing numerous external URLs, with a specific focus on SEO manipulation and potentially phishing. The embedded URL 'https://soxebez.ru/aws?utm_term=why+did+aragorn+become+a+ranger' is a primary indicator of this malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://soxebez.ru/aws?utm_term=why+did+aragorn+become+a+ranger PDF link annotation
    • https://mofaxogarapew.weebly.com/uploads/1/3/4/7/134771612/zipaxumubifedozof.pdfIn PDF document text
    • http://zijixiteluwek.scienceontheweb.net/61726076197.pdfIn PDF document text
    • http://pelistens.xyz/safety_budget_for_construction_projectyjuo5.pdfIn PDF document text
    • http://tameeniraq.com/2009_bmw_328i_xdrive_owners_manuald05cl.pdfIn PDF document text
    • http://peuer.xyz/wonderstruck_book_reportwhmko.pdfIn PDF document text
    • https://pedesidava.weebly.com/uploads/1/3/4/3/134355179/gexutodufivu.pdfIn PDF document text
    • http://sodowetan.mywebcommunity.org/how_to_solve_rubiks_cube_easy_tutorial.pdfIn PDF document text
    • http://premiumpornclips.com/gezexu3452i.pdfIn PDF document text
    • http://rubeatyshop.xyz/the_rising_of_the_shield_hero_light_novel_english_translationlj6t4.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/f5d394cd-5645-4dcc-8298-5f7b6e805909/fumivutoxidovavuwom.pdfIn PDF document text
    • https://070488ba-e3d9-4c74-834b-445551f5513c.filesusr.com/ugd/fb83f1_3f9bc327f5d341a7a108590138295620.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/127513ec-8054-4041-a519-a85daebb8434/18749625480.pdfIn PDF document text
    • https://74a5c9af-61bb-4d76-9351-4d02c0bf652a.filesusr.com/ugd/e33828_398e7c7195254fa4bf0e53e4d9249f5c.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b32f168-9299-4f41-ada7-dde7d9c1ef97/best_python_data_analysis_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60856ec7-4ff7-4e77-bdd6-df9a247930cc/phonetic_characters_keyboard.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62c2099a-78bf-46d8-9aac-93f8d1bfefed/mevufor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a9f8da76-d42d-4647-8b99-9375b79c757a/how_heavy_is_a_valley_pool_table.pdfIn PDF document text
    • https://84d5b3ab-51dd-4312-87b7-51df18fb3b26.filesusr.com/ugd/9ea9b6_eb5b6be0ee884054b3c4358e522d1c64.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/f723196e-d931-4aa5-b146-4953c96dd537/17345267689.pdfIn PDF document text
    • https://09ec9d85-9312-4337-94d0-b84080e05f2e.filesusr.com/ugd/ac0094_a706c8e7127a44c1b3666291f47a041a.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/1480e4fe-8415-4b3e-adb1-cfde1e88ae02/quotes_from_shatter_me_series.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/059de3eb-7be3-4994-a9ce-b5610d836557/what_can_blood_type_a_eat_for_breakfast.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4fc9afa-419f-4355-9575-4526bfbc5aed/fatubomema.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_off0001475a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1475A 5108 bytes
SHA-256: 93e2fc4e52ba7e2bf696e29b12a4c59e164722a87d85294ce3736f8ac6216380
font_01_sfnt_off0001588d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1588D 12712 bytes
SHA-256: 1f4ce33ebc1f6214cdb1f3789ae28ea9f26afc49dba86ece2b67ae59dfc04a56
font_02_sfnt_off00018116.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18116 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2