Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2d83b9f7e6112f4…

MALICIOUS

PDF

78.5 KB Created: 2021-04-07 02:02:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: dda1799eadb1b27ebbe88604d4adb53c SHA-1: 7efd5f43a2f10d31871e6c2948d246924c9ab0a4 SHA-256: b2d83b9f7e6112f4ce871d42c050817ca33901173fb8d3fbec94f77e507ddef3
96 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. 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 0.9996

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://kuzutuzo.ru/wix?keyword=anticipation+guide+examples PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4392452/normal_5fffdcf524615.pdfIn PDF document text
    • http://smcjd.com/72754965898rf9kn.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392871/normal_60265c43d1589.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409413/normal_5ffdf5cfe07e9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471692/normal_60380b742c446.pdfIn PDF document text
    • http://vorecan.fun/92164013610clpvz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450428/normal_602ee0984832c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367287/normal_5fe5360d62c86.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403556/normal_600577d3853ed.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376127/normal_5ffb13f8aac4f.pdfIn PDF document text
    • http://azorocheat1.xyz/logitech_harmony_hub_remote_accessd4gcb.pdfIn PDF document text
    • http://english-10.site/amazon_gold_ring_price4mpxx.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jatujij.rf.gd/1796434624.pdfIn PDF document text
    • https://s3.amazonaws.com/bewibiwat/what_are_the_five_stages_of_mitosis_in_eukaryotic_cells.pdfIn PDF document text
    • https://d5aacb37-8766-4234-9cc8-c2ec3b911aba.filesusr.com/ugd/1e723b_753482bfad9a40f9afe990e9c5482ca1.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/sefipa/boldon_comprehensive_school_ofsted_report.pdfIn PDF document text
    • http://sejonigimanam.epizy.com/hortonworks_hadoop_hive_odbc_driver.pdfIn PDF document text
    • https://s3.amazonaws.com/risalenefazozo/tameporetagewoda.pdfIn PDF document text
    • https://s3.amazonaws.com/zupenafud/tigifumokonagukasoguse.pdfIn PDF document text
    • http://sepazebop.rf.gd/lcsw_illinois_exam_study_guide.pdfIn PDF document text
    • https://f8340159-69ce-4309-ac43-521e9a8475b4.filesusr.com/ugd/bc0b97_bc5827182cba4ae992c8a1c5be8d80b7.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gimufesajo/sheriff_of_nottingham_2nd_edition_rules.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_off0000f670.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF670 5352 bytes
SHA-256: c6ca527e3006bdb1b5928d118d5ee9c28fb647ebaa10638a7fd9260b79094a8a
font_01_sfnt_off0001089f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1089F 10688 bytes
SHA-256: 64a151065186dc06a9307bdcd3409d828b418de27f5c2d3e832ed025c12936d4

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