Malicious PDF — malware analysis report

Static analysis result for SHA-256 c966cdff676ea58e…

MALICIOUS

PDF

82.9 KB Created: 2021-03-20 14:52:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 82abae83f6d655d9e5dc0ed28cc0537e SHA-1: 283c947c7e9c5b4bf1c6197d2742b27384694ea9 SHA-256: c966cdff676ea58e3ec4d9dbbefd667165a18336679ef68355ea3178a25fabeb
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains an embedded URL pointing to a suspicious domain, which is likely intended to deliver a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to a diet plan, aligning with common phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://jumiwimov.ru/award?keyword=blood+type+a+positive+diet+food+list+pdf PDF link annotation
    • http://kijekidajefi.getenjoyment.net/63359137106.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472783/normal_600a0107b9460.pdfIn PDF document text
    • https://godanikepogi.weebly.com/uploads/1/3/4/5/134509841/8175649.pdfIn PDF document text
    • https://sofugiri.weebly.com/uploads/1/3/4/5/134509821/6312a95e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501634/normal_603600a4b5e0d.pdfIn PDF document text
    • https://lebivituwaw.weebly.com/uploads/1/3/1/8/131856954/bokopejezafuxu-mawulepimox.pdfIn PDF document text
    • https://lanekugufer.weebly.com/uploads/1/3/5/3/135351315/1428036.pdfIn PDF document text
    • https://guzesunidami.weebly.com/uploads/1/3/0/8/130873942/7a5ef06b8df2c.pdfIn PDF document text
    • https://xivexibajewubud.weebly.com/uploads/1/3/1/0/131069970/1708578.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447888/normal_6001e2e27fa02.pdfIn PDF document text
    • http://joxezorov.mywebcommunity.org/58739745671.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461205/normal_5fceb8a58c23c.pdfIn PDF document text
    • http://wafesegagi.iblogger.org/jirum.pdfIn PDF document text
    • https://kexejimeso.weebly.com/uploads/1/3/4/0/134096016/6479930.pdfIn PDF document text
    • http://xemizawufogutuf.scienceontheweb.net/31574928893.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nuwadolonopip.onlinewebshop.net/scag_wildcat_parts_diagram.pdfIn PDF document text
    • https://s3.amazonaws.com/pozokimepe/miessler_quimica_inorganica.pdfIn PDF document text
    • https://s3.amazonaws.com/tarajix/khan_academy_compound_inequalities_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/batoragubukepo/weber_grill_cooking_recipes.pdfIn PDF document text
    • http://tigagatu.atwebpages.com/hp_laserjet_pro_m1212nf_mfp_printer_price_in_pakistan.pdfIn PDF document text
    • https://s3.amazonaws.com/zupenafud/do_not_enter_employees_only.pdfIn PDF document text
    • http://nobufep.epizy.com/copernicus_irb_forms.pdfIn PDF document text
    • http://baburumekad.epizy.com/magerasagagijobobuvaluxo.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_off00010754.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10754 5152 bytes
SHA-256: 993ea72c233829a331f1489f9547091a6261a58efc43908035c719462fa1fc1d
font_01_sfnt_off00011908.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11908 10908 bytes
SHA-256: 41dd1391d47a08626f9410ce2a5b702730fa4c072d714ca78adffc6f2fc79512

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