Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab0b0bdc2a8e388a…

MALICIOUS

PDF

76.0 KB Created: 2021-03-18 09:59:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4f6a5b2fe76dcd07d9e80b8897bb4e4d SHA-1: 277f7e652cf0752fc01878af531669c8f0d98901 SHA-256: ab0b0bdc2a8e388aa32d1c7939510d4e3594814b469d1bd3e507ffdad58ab533
96 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, with a high risk score. It contains an embedded URI pointing to a suspicious domain, which is a common tactic for phishing or malware delivery. The PDF structure itself does not contain readable content, suggesting it is a container for malicious links or exploits.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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/strik?utm_term=what+age+is+the+shatter+me+series+for
    • https://cdn.sqhk.co/godezixibufo/7yhijdG/78104594468.pdf
    • http://lalevuw.mypressonline.com/jiseno.pdf
    • https://cdn.sqhk.co/rovujesox/i4LU99S/musicians_friend_jackson_guitars.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/7223995c-1255-4900-89c1-8d900cf5f785/46579643961.pdf
    • https://s3.amazonaws.com/bejexe/plan_de_estudios_2011_primaria_quinto_grado_educacion_fisica.pdf
    • http://bivojeda.atwebpages.com/zefekibibe.pdf
    • https://s3.amazonaws.com/jolozidabi/12662480235.pdf
    • https://uploads.strikinglycdn.com/files/a58b818e-83ac-465d-8a7c-33f6d7398f98/paint.net_how_to_edit_existing_text.pdf
    • https://s3.amazonaws.com/makumapikeze/76066895378.pdf
    • https://s3.amazonaws.com/tixeligufokup/cisco_switch_sg350x_datasheet.pdf
    • https://uploads.strikinglycdn.com/files/067d9a4f-3f41-4ba4-84b4-b65dfe4db246/22822821536.pdf
    • https://uploads.strikinglycdn.com/files/8ffdf948-8859-40e4-b86d-70c1fccd7e2f/management_of_organizational_behavior_8th_edition.pdf
    • https://s3.amazonaws.com/sepawi/74273784696.pdf
    • https://uploads.strikinglycdn.com/files/b49cdb32-7d2b-46a6-8912-05b14ecbcf83/nzxt_phantom_410_red.pdf
    • https://uploads.strikinglycdn.com/files/b5f8ef5e-3cbf-440c-b238-deef091ae788/xemeb.pdf
    • https://uploads.strikinglycdn.com/files/c1ff7158-39b6-4285-944f-42e52e244652/55721722264.pdf
    • https://uploads.strikinglycdn.com/files/90676a9f-2b53-4665-a2d3-7651af3444d0/92547394154.pdf
    • https://s3.amazonaws.com/fewunadupop/nebudidejezavafowuweb.pdf
    • http://seroritubofa.atwebpages.com/types_of_drill_in_indian_army.pdf
    • http://muvekalufisu.atwebpages.com/jurnal_argentometri_issn.pdf
    • https://s3.amazonaws.com/bokelur/39874585112.pdf
    • https://s3.amazonaws.com/bubeto/pezugejo.pdf
    • https://uploads.strikinglycdn.com/files/aa5a38ce-0b3e-4698-9907-50af9b4dd7b1/romamamimoxitomuve.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ec17.bin
0e6f3d3fbea55378ab3a64bcc9975f8c701183f79ee0a08f3b8f9f5365ab58cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEC17 5160 bytes
font_01_sfnt_off0000fd8a.bin
093fdb73901f2261f3dcdea365c1cc7b65b4133ac8ca2a940ba44b174fd018b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFD8A 10688 bytes

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