Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1322cdc2252ed7b…

MALICIOUS

PDF

76.6 KB Created: 2021-04-02 17:16:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 2671df019e9cdefc5bea4448d531510b SHA-1: 2875e4a407dacb9b8cdc2529fb8877063804c5d5 SHA-256: e1322cdc2252ed7b911f691246a5f63e024e05e1dbca201be7536b737858c64c
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, with a primary focus on 'fokemale.ru', suggesting an attempt to redirect users to a malicious site. The document body, though heavily obfuscated, contains keywords related to a 'walking dead mystery mini price guide', indicating a lure to entice users to click on the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://fokemale.ru/wix?keyword=walking+dead+mystery+mini+price+guide PDF link annotation
    • https://torawatuxopo.weebly.com/uploads/1/3/4/3/134379163/zidogewidoket_kutab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485935/normal_6059da59c3e64.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410016/normal_605d34adb66bf.pdfIn PDF document text
    • http://wojifos.22web.org/mexerizoxosefokofududasam.pdfIn PDF document text
    • http://rukakev.iblogger.org/bow_tie_cinemas_majestic_6.pdfIn PDF document text
    • http://gasurorir.sportsontheweb.net/twilight_books_for_sale_jhb.pdfIn PDF document text
    • http://vodabutopidaru.getenjoyment.net/sirelowesuta.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368979/normal_5fe5063c80717.pdfIn PDF document text
    • http://noxivivixuza.22web.org/bonuwitizibodibotigusar.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470221/normal_5fd2a918dd6ff.pdfIn PDF document text
    • http://javosewo.sportsontheweb.net/90840370434.pdfIn PDF document text
    • https://milanabez.weebly.com/uploads/1/3/2/6/132695465/9603795.pdfIn PDF document text
    • http://zuxuvikewi.sportsontheweb.net/core_java_mcq_questions.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://napalujimawoz.rf.gd/79638558428.pdfIn PDF document text
    • http://zuwemanikipe.rf.gd/employment_verification_template_past_employee.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/363148d2-c6ee-4412-83fa-b8b4b54e7ff5/what_are_the_steps_in_the_consumer_decision_making_process.pdfIn PDF document text
    • http://liraperuwuw.atwebpages.com/microsoft_excel_projects_for_college_students.pdfIn PDF document text
    • http://gebejofokim.rf.gd/android_biometricprompt_api.pdfIn PDF document text
    • http://woxariwete.rf.gd/burleson_star_police_reports.pdfIn PDF document text
    • http://sabulawum.rf.gd/xikinonem.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20af0f05-c7ff-42e0-99c9-d0c9d9c3bcf5/savividopemimu.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_off0000ed13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED13 5572 bytes
SHA-256: c5b0ea7b18cd0398c46a83c72473c095ec13157838fbbe5612d36c3066a67b53
font_01_sfnt_off00010007.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10007 10960 bytes
SHA-256: b095475e28670e9b5ccb5a3ee3f80e198c96a55d3318b30edc9454855a0bac30

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