Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad5e3bbaf13cfa77…

MALICIOUS

PDF

81.9 KB Created: 2021-02-25 00:56:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: d1c5ec801516d3b863e239670f37dfff SHA-1: 476caad857d8469aad913169e9056cc12132efe5 SHA-256: ad5e3bbaf13cfa77a371fff4c0843dee23fb7213f2628474ef055bebb9a41081
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 PDF contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to 'Lord of the flies mask project piggy', which is likely a pretext to disguise the malicious nature of the PDF.

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://baarspo.ru/wix?keyword=lord+of+the+flies+mask+project+piggy PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4447464/normal_5fee66ad3e4e7.pdfIn PDF document text
    • http://mosebuzixat.mywebcommunity.org/85010473398.pdfIn PDF document text
    • https://cdn.sqhk.co/duloputemab/ijjfEjb/11470468406.pdfIn PDF document text
    • http://sberbank.link/45856901125jpa9f.pdfIn PDF document text
    • http://chaptejvxz.fun/el_abecedario_para_imprimiroomwu.pdfIn PDF document text
    • http://vutanari.22web.org/b._h._m._s_application_form_2018.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/tazibabebamep/esophageal_cancer_screening_guidelines.pdfIn PDF document text
    • http://fanutebuxus.rf.gd/bawemomuzeletagelapojok.pdfIn PDF document text
    • http://rimupikerotazes.rf.gd/jeruvuzepudagiwipazi.pdfIn PDF document text
    • http://kedisijusa.onlinewebshop.net/jbl_xtreme_3_vs_xtreme_2_specs.pdfIn PDF document text
    • https://s3.amazonaws.com/nowokil/equifax_canada_consumer_update_form.pdfIn PDF document text
    • https://s3.amazonaws.com/mexesazaxasa/nadamedafukovobegikuf.pdfIn PDF document text
    • http://wodasakuzetu.rf.gd/mubudumuwivabalemosow.pdfIn PDF document text
    • http://jikusipuxojapu.epizy.com/43853460563.pdfIn PDF document text
    • https://s3.amazonaws.com/petikamov/messenger_apk_new_update.pdfIn PDF document text
    • http://dapizodipe.myartsonline.com/how_to_set_up_a_hotspot_on_my_iphone_6.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_off000102b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102B7 5752 bytes
SHA-256: 25adf90146d155aa8026fe2c6571c93888ba586348f5ba04bfbf66f0d9a889d8
font_01_sfnt_off00011631.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11631 10644 bytes
SHA-256: 837e3a2960073d4360da5e5cf80c04dc61f6cd3dde1c153f38ceb2a2a6fcf793

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