Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e53a023abe1aa51…

MALICIOUS

PDF

85.9 KB Created: 2021-03-06 04:41:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 34cca38d13d1192641e7348fedb88a9e SHA-1: ad0e831ef24ddde50ef7b0b71000c6c37ee8f120 SHA-256: 4e53a023abe1aa5130cf8e020db083d20b56759dec576e1f11c8a54a735ed1b7
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The document body references popular online games, a common lure for phishing or malware distribution. The presence of embedded URLs suggests the document is intended to redirect users to malicious sites for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://kuzutuzo.ru/wix?keyword=unblocked+games+k10+mutilate+a+doll+2 PDF link annotation
    • http://borezopesane.22web.org/93093255299.pdfIn PDF document text
    • http://quinzsy-studio.design/pesakibekuzircdu0y.pdfIn PDF document text
    • http://jewlgems.com/sueo_de_una_noche_de_verano_teatro_arlequin4qto5.pdfIn PDF document text
    • http://mafonofolifeda.22web.org/30382124268.pdfIn PDF document text
    • http://gomunawuwox.22web.org/nubikanupuro.pdfIn PDF document text
    • http://zusevad.22web.org/sadaridita.pdfIn PDF document text
    • http://ttttrrrr.space/80393380740t07ng.pdfIn PDF document text
    • http://xtina.online/pozijhm817.pdfIn PDF document text
    • http://sedouche.xyz/12552762956tbzrl.pdfIn PDF document text
    • http://lnstagramcopyrightmanagement.com/pinoxatifa5t6ez.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xivutunitilema.epizy.com/xidimajaz.pdfIn PDF document text
    • https://s3.amazonaws.com/wavunot/zesopaxisit.pdfIn PDF document text
    • https://s3.amazonaws.com/xirixepo/ginotovubam.pdfIn PDF document text
    • http://vokulokunupada.epizy.com/tavupaferatasidebuvebux.pdfIn PDF document text
    • http://vilojuwomujup.epizy.com/wabudosinolite.pdfIn PDF document text
    • https://s3.amazonaws.com/folexapurilowe/80155251899.pdfIn PDF document text
    • http://ketaxesam.epizy.com/2017_chevy_cruze_lt_hatchback_owners_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/biwuwukesazef/mutixamazasobuxizowofo.pdfIn PDF document text
    • http://kovemipenege.rf.gd/49754532276.pdfIn PDF document text
    • https://s3.amazonaws.com/rorives/cattle_feed_ingredients.pdfIn PDF document text
    • https://s3.amazonaws.com/jepinebawo/98665643231.pdfIn PDF document text
    • https://s3.amazonaws.com/xuvamuba/mebewabesapovaz.pdfIn PDF document text
    • http://tidizovebimike.epizy.com/93545276416.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_off0000fef5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEF5 5684 bytes
SHA-256: 1a541a8da448914007b3992842c6ea5da750290ab693edde1cd2761eeee5e66e
font_01_sfnt_off00011242.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11242 10240 bytes
SHA-256: 21ff68115536caac9e6d7a63d0e052de39d5e891fed721e24125f8f675479ca9
font_02_sfnt_off0001357f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1357F 16036 bytes
SHA-256: 35d3440dae1ebc896564e4e6f70ea95aa3a30a1ac603c7fffbb21b68b8b72e2f

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