Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd3b9686be563e5d…

MALICIOUS

PDF

73.7 KB Created: 2021-03-05 11:15:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 21fd0fc4f95a4d15b1484ba94a9ab98f SHA-1: 7e884e9f1aa6839187ea137c06e1847ae584d6f1 SHA-256: fd3b9686be563e5dccb06bcad22d82016961799fea3687a4ff7c55054f5d2f65
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The document body, though heavily obfuscated, suggests a lure related to 'western philosophy pdf'.

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://xezojetit.ru/award?keyword=what+is+western+philosophy+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4476011/normal_5fd9153d7eb4e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484365/normal_5ff4e1c3f2517.pdfIn PDF document text
    • http://zuraleres.mywebcommunity.org/86612089735.pdfIn PDF document text
    • https://cdn.sqhk.co/munuluxel/dieiejb/siren_head_horror_story_part_4.pdfIn PDF document text
    • http://kopuvimu.scienceontheweb.net/xofikijoxejo.pdfIn PDF document text
    • https://cdn.sqhk.co/lovojekaboxi/cjeXuic/53541587605.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459163/normal_5fe8d9318cabf.pdfIn PDF document text
    • http://wejowadizabudex.mypressonline.com/nujiravaka.pdfIn PDF document text
    • https://cdn.sqhk.co/tatudawo/3Ijf4m2/10382672434.pdfIn PDF document text
    • https://cdn.sqhk.co/pixefavenar/jbhcAea/51952012185.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4503874/normal_5ff8ac895077f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372080/normal_603c7439de1f6.pdfIn PDF document text
    • https://cdn.sqhk.co/xekawiba/bmVjfFt/the_weather_channel_app_for_windows_10.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/zarelusipofox/bellanca_super_viking_flight_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/bisapovepizaj/45136882432.pdfIn PDF document text
    • https://s3.amazonaws.com/tugabijenovili/what_is_formal_and_informal_assessment_examples.pdfIn PDF document text
    • https://s3.amazonaws.com/jujojomojemiz/60785550569.pdfIn PDF document text
    • http://tulajadulixo.myartsonline.com/ariel_sylvia_plath_amazon.pdfIn PDF document text
    • https://s3.amazonaws.com/jidosatikim/can_you_still_use_an_ipod_nano.pdfIn PDF document text
    • https://s3.amazonaws.com/befafuni/28412411529.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxexi/nokia_adb_driver_64_bit.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_off0000e4cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4CD 5336 bytes
SHA-256: 73cdb4956016c57199aa83251137120b93fe53fee8f1be3dce44bbcc6700ec87
font_01_sfnt_off0000f708.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF708 9944 bytes
SHA-256: 6cbb9292e1bb62485d8efc30cd4e256f58e5c1c51fa4e25d5ef237be905b7ee6

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