Malicious PDF — malware analysis report

Static analysis result for SHA-256 eff06b4652f9fedb…

MALICIOUS

PDF

90.3 KB Created: 2021-04-22 23:48:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 5bf6d7650ff8cfad5a68eb112dc19e78 SHA-1: 5355eefd5766694d23bbfc4ab03fe2cfe80bc183 SHA-256: eff06b4652f9fedb9ac1316cbbf2793657526086d8504c2c6d2ce579350dbb7a
116 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses a callback-phone (TOAD) lure. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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
  • 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://crophysi.ru/strik?utm_term=how+to+fix+xbox+360+controller+button+stuck PDF link annotation
    • http://boputev.66ghz.com/84895436211.pdfIn PDF document text
    • http://jupifidupepir.getenjoyment.net/monimemorosopidi.pdfIn PDF document text
    • http://g2am2e.xyz/eyelash_extension_training_orlando_floridajrde2.pdfIn PDF document text
    • http://siankaanmexico.com/isoflex_inox_italy_kniveszu6v7.pdfIn PDF document text
    • http://rineset.xyz/days_of_the_week_tracing_worksheet8bcc6.pdfIn PDF document text
    • http://sollabs.xyz/which_is_the_best_breville_ovend4nba.pdfIn PDF document text
    • http://online-bestshop.xyz/microsoft_azure_fundamentals_training_certification_az-_900qa7i4.pdfIn PDF document text
    • http://bexomuxag.iblogger.org/14145957527.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
    • http://gagisejokunego.rf.gd/accounting_for_merchandising_operations_practice_problems.pdfIn PDF document text
    • https://s3.amazonaws.com/salosibejodod/32033683259.pdfIn PDF document text
    • https://s3.amazonaws.com/jovekus/sports_hd_dv_1080p_istruzioni_in_italiano.pdfIn PDF document text
    • https://s3.amazonaws.com/lebejos/koxijudowoxaros.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac3e8bb3-9728-4dec-9671-fee3cafdd8d8/kufikog.pdfIn PDF document text
    • http://pimifemegizak.epizy.com/adnan_khan_photos.pdfIn PDF document text
    • https://s3.amazonaws.com/zamuriza/sukaduf.pdfIn PDF document text
    • http://nobapizasiwe.myartsonline.com/68423369447.pdfIn PDF document text
    • http://valupakukav.myartsonline.com/22775724665.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa8524c1-24e6-4cf2-b9de-242a467e39b6/50175078667.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_off000113cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113CC 5332 bytes
SHA-256: 6967f5f02ae995c98bd8265fd4c205eada52b1cb52fa1be48efc8c364c88ab5e
font_01_sfnt_off0001260a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1260A 11480 bytes
SHA-256: de69b015316974cfa345f2a625353014e3ce7f079c5ef3fba9dd085bd67afd82
font_02_sfnt_off00014d49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14D49 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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