Malicious PDF — malware analysis report

Static analysis result for SHA-256 215ee10e943ad6cb…

MALICIOUS

PDF

106.4 KB Created: 2021-05-20 04:19:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 2041a7644df6e4ae42c5fe5ce64e38fa SHA-1: 6c60e4aac44029ed2192c2ce75f6e0711f260db8 SHA-256: 215ee10e943ad6cb780272277cbd1a88cc95de97392a2ccef633eb6f392b7336
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is a PDF document flagged by ML classifiers and ClamAV as malicious. It contains an embedded URI pointing to 'https://bologen.ru/strik?utm_term=julius+caesar+act+4+scene+3+modern+english', which is likely a phishing or malware distribution URL. The document body is heavily obfuscated, but the presence of the malicious URI strongly suggests a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9987

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://bologen.ru/strik?utm_term=julius+caesar+act+4+scene+3+modern+english PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4479445/normal_5fd6e0676322a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368500/normal_605f40333537b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417029/normal_5fe1190f4f4f7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495550/normal_601277ad83aeb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418199/normal_60025e3d433e2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387931/normal_5ff633d5456fa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458628/normal_5fdde9457b788.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446161/normal_6031d53af3d95.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416150/normal_604d435343ba1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413843/normal_5ff7162701c7d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470968/normal_603c07ea31c06.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/295ddf89-e361-4ee8-ba1d-c766da8f7611/multi_step_math_word_problems_4th_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/pidufozu/24296249302.pdfIn PDF document text
    • https://s3.amazonaws.com/lizuseguwix/pozepa.pdfIn PDF document text
    • https://s3.amazonaws.com/rufonali/vevem.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bce4305f-0d4b-4336-a9ae-c997ab245843/flowers_for_algernon_theme_handout.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c1550684-9225-45b6-b6e9-2138eefe8cb4/xabakojifewatekexunumefog.pdfIn PDF document text
    • https://s3.amazonaws.com/sojaxub/how_to_put_up_window_decals.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be5d6c5f-be62-401f-9acd-5b4280356fc5/26084045771.pdfIn PDF document text
    • https://s3.amazonaws.com/jezobasit/39748484188.pdfIn PDF document text
    • https://s3.amazonaws.com/belopudevuzuza/mibiwawimiviniro.pdfIn PDF document text
    • https://s3.amazonaws.com/wupagivoz/how_to_plot_xrd_data_in_excel.pdfIn PDF document text
    • https://s3.amazonaws.com/nezanurugega/28740126487.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/924696b6-6b92-4123-b269-859a778b2de8/tazuz.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_off00015f16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15F16 5592 bytes
SHA-256: 9be089cfbbcc9443fad2695ae0600366c68fb6dd21a28af531be4dde8c2b18e3
font_01_sfnt_off000171f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x171F2 12212 bytes
SHA-256: 000fc9872482f4aee22e90dee971bdb2a86cf87820db6f37c6c138f311543238

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