Malicious PDF — malware analysis report

Static analysis result for SHA-256 55b4dd3fe392469f…

MALICIOUS

PDF

74.5 KB Created: 2021-03-02 23:51:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 0314c6c0a9b31a1f69b2fbd3280412b2 SHA-1: 248c1cb5da810613f351e034eb77e4ff0cae3612 SHA-256: 55b4dd3fe392469f123e9939911e12602c143b49de04e837008ef0bc0a010ad3
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains an embedded URI pointing to a suspicious domain, likely intended to deliver a secondary payload or redirect the user. The document body, though partially corrupted, suggests a lure related to a 'Briggs and Stratton 12.5 hp engine service manual'.

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://seumenha.ru/strik?utm_term=briggs+and+stratton+12.5+hp+engine+service+manual PDF link annotation
    • https://cdn.sqhk.co/molipigi/rbgKrjj/57512974884.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393883/normal_5fcb50ea8d47e.pdfIn PDF document text
    • https://cdn.sqhk.co/pubamegumox/jckFGjl/utm_global_citizenship_certificate.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457572/normal_5fc97895834b4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411250/normal_6007782a0517d.pdfIn PDF document text
    • http://vegofejolafud.mygamesonline.org/zetitazulib.pdfIn PDF document text
    • https://cdn.sqhk.co/zogobadakedu/03hi9jh/xewubukoxiforikat.pdfIn PDF document text
    • https://cdn.sqhk.co/xawuboma/iegeK2l/nibofesupukirixuwub.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372355/normal_5fe59e79cf82a.pdfIn PDF document text
    • https://cdn.sqhk.co/viwiratoposu/Ojaxvhe/ketetunetotijiludal.pdfIn PDF document text
    • http://sawemawe.mywebcommunity.org/what_are_the_components_of_quality_assurance.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
    • https://s3.amazonaws.com/tonemakopinibem/7209235526.pdfIn PDF document text
    • https://s3.amazonaws.com/xovekolamoxe/xekenajevep.pdfIn PDF document text
    • https://s3.amazonaws.com/sefiwegegagu/wigupapebetam.pdfIn PDF document text
    • https://s3.amazonaws.com/zukogi/50166869212.pdfIn PDF document text
    • https://s3.amazonaws.com/nosepevozux/boogie_cousins_injury_report.pdfIn PDF document text
    • https://s3.amazonaws.com/votawawo/personality_worksheets_for_preschoolers.pdfIn PDF document text
    • https://s3.amazonaws.com/dazinibonofobi/pupimone.pdfIn PDF document text
    • https://s3.amazonaws.com/fatikonavori/62463161306.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_off0000d7ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7EF 5820 bytes
SHA-256: c5b180411afa94c325dd181864196244d2dcd3fd2c3351b7f213d1b4652b40b7
font_01_sfnt_off0000eba1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBA1 10124 bytes
SHA-256: 496a79846ae56a456caad1a5e68cef69faffefcb7a4d52c24f9d2e2a4e3f447c
font_02_sfnt_off00010e4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E4D 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

Open this report in the interactive analyzer, or submit your own file for analysis.