Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb7ae296ff03c22e…

MALICIOUS

PDF

72.5 KB Created: 2021-02-15 21:32:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: f876e6301119c382eaabb76f8d296d4a SHA-1: 827e5bb9e73f457cb22b4e56530d07f9fa655902 SHA-256: eb7ae296ff03c22e3ef3bc51febced2aa08538ca7690cb5f3bde68abccebff07
176 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 multiple heuristics as malicious, including ML classification and ClamAV detection. It contains a link to a credential phishing page impersonating a brand, and also includes a URL that appears to be part of a callback phishing lure. The document body is heavily obfuscated, but the presence of external URIs and phishing-related heuristics strongly indicates a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://pokasejazutiz.weebly.com/uploads/1/3/4/4/134447431/vimafogijelumo.pdf.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://baarspo.ru/strik?utm_term=rmv+online+drivers+license+renewal PDF link annotation
    • http://bemigovoso.iblogger.org/19647919275.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388279/normal_600a8427d53c0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377371/normal_5ff5a9e94669c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367622/normal_5ff2b9c89ab64.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480579/normal_6025758e8d936.pdfIn PDF document text
    • http://koburokigijufu.iblogger.org/segavuxivitidod.pdfIn PDF document text
    • http://kifikawi.66ghz.com/tojed.pdfIn PDF document text
    • https://pokasejazutiz.weebly.com/uploads/1/3/4/4/134447431/vimafogijelumo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480387/normal_5fc89788a3d23.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405206/normal_5fdae773c07f8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450746/normal_5fcd709dd3162.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483591/normal_5ffc10d4da113.pdfIn PDF document text
    • https://nuvaxavixo.weebly.com/uploads/1/3/0/7/130738964/sudigi-mugevemolo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/foneniz/ipl_apps_2018.pdfIn PDF document text
    • http://gatapin.rf.gd/xupiliruxu.pdfIn PDF document text
    • https://s3.amazonaws.com/juliziwojatige/fifa_16_demo_ocean_of_games.pdfIn PDF document text
    • https://s3.amazonaws.com/gizonukorad/formal_apology_letter_for_not_attending_class.pdfIn PDF document text
    • http://tizivedimusos.epizy.com/roginirabanamalado.pdfIn PDF document text
    • https://s3.amazonaws.com/temujonuwu/chrome_android_apk_old_version.pdfIn PDF document text
    • http://zunedolu.rf.gd/52968230122.pdfIn PDF document text
    • http://ruboxoziwoz.rf.gd/dotixon.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_off0000dd6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD6D 5244 bytes
SHA-256: ef50cb933768a0e2b5be184e49da1a071bb45df03799e8759153025f252c23fc
font_01_sfnt_off0000ef3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF3F 10916 bytes
SHA-256: ab7ba44031acea254ce1f5a14edfe1884e989b08c698a13f067011bf3a2439ec

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