Malicious PDF — malware analysis report

Static analysis result for SHA-256 37761008d17827dd…

MALICIOUS

PDF

78.1 KB Created: 2021-02-27 02:10:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 10f4faa082072646350c734102d572dc SHA-1: 7c84e0142074c10dc6239952a9b0b477362fa99f SHA-256: 37761008d17827dd9661d36b8ed366bb0428a45ce8a1be62d726cf22b3f74089
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The document body, though heavily obfuscated, includes text related to 'Grendel book sparknotes', suggesting a lure to a phishing or malware distribution site. The presence of external URIs and the ML classifier's high confidence score indicate a malicious intent to redirect the user to a compromised resource.

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://midufefew.ru/strik?utm_term=grendel+book+sparknotes PDF link annotation
    • http://dixojele.22web.org/88276178927.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409243/normal_5fe138c2b042c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479212/normal_6008d6e144157.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470409/normal_5ff0db4d47ad3.pdfIn PDF document text
    • http://dreamingdeveloper.com/armored_warfare_macgtrn4.pdfIn PDF document text
    • http://jabilevij.mypressonline.com/epson_wf_2540_printer_error.pdfIn PDF document text
    • http://zekojotewakugag.mypressonline.com/eyelash_extension_course_jacksonville_fl.pdfIn PDF document text
    • https://sonenekuz.weebly.com/uploads/1/3/5/3/135302947/buveburotabotole.pdfIn PDF document text
    • https://zopavuro.weebly.com/uploads/1/3/4/5/134584556/xajujemake.pdfIn PDF document text
    • http://mowefopovog.mywebcommunity.org/how_to_read_your_blood_glucose_meter.pdfIn PDF document text
    • https://wobofosowipifir.weebly.com/uploads/1/3/0/7/130776138/6051611.pdfIn PDF document text
    • http://stal-kemerovo.ru/rush_limbaugh_radio_stations_californiagrz4k.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472486/normal_5fdf5e1ba3e39.pdfIn PDF document text
    • https://nimekeboxiz.weebly.com/uploads/1/3/0/8/130873861/9943369.pdfIn PDF document text
    • http://ganitigusawev.mygamesonline.org/the_standard_hotel_miami_fl.pdfIn PDF document text
    • http://lassituda.online/705740066107g47t.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
    • http://bamalupit.rf.gd/722399540.pdfIn PDF document text
    • http://diruxepuf.epizy.com/lufurukifevedibafajoru.pdfIn PDF document text
    • http://fujebudavitasoz.epizy.com/rosemount_3051_configuration_tool.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_off0000ea64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA64 4928 bytes
SHA-256: a2d77b42313aff0ab7e953736f59e59faf5ce52262eb206b494c1219e02986f0
font_01_sfnt_off0000fb22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB22 9904 bytes
SHA-256: 92be711aed0a536825363642e680fbc5e799061e6966562bb385681f303f0c88
font_02_sfnt_off00011d0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D0B 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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