Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f42a9c9c7f44bd4…

MALICIOUS

PDF

74.3 KB Created: 2021-02-23 07:53:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: d6e8808be499fa175709f90754016f40 SHA-1: 3db43ca483b3cb3e7a7944ecfd9f6db0d15d29ab SHA-256: 3f42a9c9c7f44bd407d4d0e374568019d595d55be135c9a6fe3ae41ed01f681c
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document body, though partially garbled, suggests a lure related to a pump manual. The presence of multiple unknown reputation URLs, including one that appears to be a tracking URL, strongly suggests a phishing or credential harvesting attempt. No scripts were extracted, but the PDF structure itself likely facilitates the redirection to these malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://jacksth.ru/strik?utm_term=hayward+power-flo+lx+pump+sp1580+manual PDF link annotation
    • http://cheapkeys.site/robepomulujafafavarkfds.pdfIn PDF document text
    • http://blacktea.space/pregnant_mom_newborn_baby_care_gamesd2oc4.pdfIn PDF document text
    • http://compte-cmbretagne.best/wuxiviserigesuwafudosn65zu.pdfIn PDF document text
    • http://lareluso.iblogger.org/string._format_example_vb._net.pdfIn PDF document text
    • http://summ-ita.space/kriya_yoga_technique_explained0fkzy.pdfIn PDF document text
    • http://lisolu.org/78013861624ljmwh.pdfIn PDF document text
    • https://cdn.sqhk.co/juzurupivepo/Iiec2ha/apple_iphone_wallpaper_hd_full_screen.pdfIn PDF document text
    • http://blaugrana.ru/mavejunidedixedaus735.pdfIn PDF document text
    • http://unlockdeals.shop/99922290263rv2e4.pdfIn PDF document text
    • https://cdn.sqhk.co/relulapezele/hhIicge/tripp_trapp_baby_set_cushion.pdfIn PDF document text
    • https://cdn.sqhk.co/xuzuvazol/iICiejh/relexozavedimutazugi.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/fotepopunaj/wivifusipesazixurororizu.pdfIn PDF document text
    • http://guwibigebozodeg.rf.gd/66728292657.pdfIn PDF document text
    • https://s3.amazonaws.com/banula/50771223176.pdfIn PDF document text
    • https://s3.amazonaws.com/juduk/potivipudepuko.pdfIn PDF document text
    • https://s3.amazonaws.com/jopomodilamego/pemel.pdfIn PDF document text
    • https://s3.amazonaws.com/xofalepelala/futotodusev.pdfIn PDF document text
    • https://s3.amazonaws.com/jusuberu/employee_mentoring_program_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/purawuma/is_paneling_cheaper_than_sheetrock.pdfIn PDF document text
    • http://walefusariwe.epizy.com/xumadupudesimusaxox.pdfIn PDF document text
    • https://s3.amazonaws.com/xonaxevetaf/litek.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_off0000e2cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2CF 5956 bytes
SHA-256: 8997d97e92555b42a3ff6c88f5f7fc5f98dda34ebe032432b5e529a0638730d7
font_01_sfnt_off0000f72d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF72D 10612 bytes
SHA-256: 3856d402fe15851c642736788769080ea056a231a9b9ab47db9ce7f801ac2861

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