Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7ffb5e8fb173daa…

MALICIOUS

PDF

78.8 KB Created: 2021-02-26 11:46:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 963ea738c1aceba02bc5004c00552743 SHA-1: a34954016d21bd4cbde4c17b70d83d5ed38272c2 SHA-256: d7ffb5e8fb173daa1a576ca98623e292aa67cec55e82c67693c03d51ca08a694
96 Risk Score

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 an embedded URL that directs users to a suspicious domain, likely to host a malicious payload or phishing content. The document body, though heavily obfuscated, suggests a lure related to 'movie screenplay books' to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://pelibifir.ru/strik?utm_term=movie+screenplay+books PDF link annotation
    • http://yewes.fun/mblex_study_guide_2019_freemwr7f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421330/normal_5fe7de24bb97d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468554/normal_5ff7aacb10851.pdfIn PDF document text
    • http://levantegroup.net/9609566919049xxy.pdfIn PDF document text
    • http://sadovik.me/how_to_use_a_charcoal_water_smokertfvua.pdfIn PDF document text
    • http://the-english-temple.com/45059514940duq9e.pdfIn PDF document text
    • http://custits.space/gazexipidoxesebojumlr.pdfIn PDF document text
    • http://canonsburglake.org/kutafeteregawk244k.pdfIn PDF document text
    • http://com-signto5.xyz/sat_practice_test_5_answers_khan_academy2w31k.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/lebejos/92900148990.pdfIn PDF document text
    • http://fobexegedun.epizy.com/adobe_premiere_pro_versus_rush.pdfIn PDF document text
    • https://s3.amazonaws.com/wewuxuviwar/hp_compaq_8000_elite_sff_pc_drivers.pdfIn PDF document text
    • https://s3.amazonaws.com/rakabexozu/nomovarivafivesizupif.pdfIn PDF document text
    • https://s3.amazonaws.com/fowikorejodi/what_is_the_third_estate_1789.pdfIn PDF document text
    • http://bixodog.rf.gd/how_to_use_the_ninja_as_a_juicer.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e16f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE16F 5300 bytes
SHA-256: bc6fbcdd514266b1d8279c7ab8dba044f054c55f0b0fc25b3796b9ae86ff983e
font_01_sfnt_off0000f3a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3A0 11448 bytes
SHA-256: 7ae7fa295cbaeb815cf67111141aa19c4007731489f347319bd644e528e365db
font_02_sfnt_off000119e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119E5 16036 bytes
SHA-256: 322960140e8024396b5b1c4c028d7a62aefee8ec5a9420328982b465283c0a07

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