Malicious PDF — malware analysis report

Static analysis result for SHA-256 c985e8b0200e7094…

MALICIOUS

PDF

79.9 KB Created: 2021-02-19 17:17:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: b9c3a27ae640615ee2aa97ca3e996b69 SHA-1: f3aeee7d9aa18db88f4e4e9917dac86bf3540c0b SHA-256: c985e8b0200e7094630a2059f0a5db64af97fd8db99e07217aba2ace57de6603
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI that points to a suspicious domain, disguised with a seemingly innocuous search query. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect the user to a malicious site, potentially for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://jottigo.ru/strik?utm_term=how+to+do+venn+diagrams+gcse+maths PDF link annotation
    • http://goo-y.xyz/zozikitidz269g.pdfIn PDF document text
    • http://rujawobezixevib.iblogger.org/36743614874.pdfIn PDF document text
    • http://info-pages.ru/long_e_worksheets_printableskz5i.pdfIn PDF document text
    • http://pumujavebedopa.iblogger.org/venegir.pdfIn PDF document text
    • http://padlamadla.site/fallen_london_beginners_guidevc2kz.pdfIn PDF document text
    • http://milanomoda-italy.site/conservation_biology_books_freedyyns.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/toguvaju/14836913937.pdfIn PDF document text
    • https://s3.amazonaws.com/mejawiwomak/visiting_card_design_template_psd.pdfIn PDF document text
    • https://s3.amazonaws.com/musoxifuvitalo/bluebeam_revu_2017_basics_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/gavobawum/4146451199.pdfIn PDF document text
    • https://s3.amazonaws.com/kakekojezutok/roxisibamitovozupim.pdfIn PDF document text
    • https://s3.amazonaws.com/jofunozuzof/43128680074.pdfIn PDF document text
    • http://tabarok.rf.gd/pardesi_anthem_full_song_mr_jatt.pdfIn PDF document text
    • https://s3.amazonaws.com/bevekizadoxuj/elegance_coral_care_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/zoxewudunigus/53455738445.pdfIn PDF document text
    • https://s3.amazonaws.com/gozifep/camera_360_degree_android.pdfIn PDF document text
    • http://dixisafujanen.rf.gd/double_negative_worksheet_1_brave_knights_answers.pdfIn PDF document text
    • http://jusakurufawotol.rf.gd/milutaxitejodib.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwenoxuzasila/30611528459.pdfIn PDF document text
    • https://s3.amazonaws.com/takebemanijewok/dagannoth_king_guide_osrs.pdfIn PDF document text
    • https://s3.amazonaws.com/julaxel/sentencing_guidelines_drugs_importation.pdfIn PDF document text
    • https://s3.amazonaws.com/piradi/american_heart_association_antibiotic_prophylaxis_guidelines_2014.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e528.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE528 5436 bytes
SHA-256: 7c80b38b6c08ff05cbe1206145bea66b0763d35b5334a6d603e0819ca83ecd4b
font_01_sfnt_off0000f791.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF791 10664 bytes
SHA-256: f0b6595923fc0ae2e2e169bd06cc401e0d249402f7d364631bc6014249618243
font_02_sfnt_off00011c14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C14 16312 bytes
SHA-256: aad9bc0f36eadc3314e08670b59090120051e308b357201f134af3d0b781b2b0

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