Malicious PDF — malware analysis report

Static analysis result for SHA-256 db39ee4f05902624…

MALICIOUS

PDF

89.2 KB Created: 2021-04-29 10:51:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: f9c10f7acb0f65f2ae9d5945a9eef295 SHA-1: 686d23fa0106b6788363e4820a7f34341a77763b SHA-256: db39ee4f05902624cca0d82664a3b1191c1c9cf28e87b791464d8060f2348bb9
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to deliver a payload or phish for credentials. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site.

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://mezovuduw.ru/strik?utm_term=how+true+is+the+zookeeper%2527s+wife+movie PDF link annotation
    • http://piwofoterif.sportsontheweb.net/mudupesaxulatope.pdfIn PDF document text
    • http://rululidevasuv.22web.org/new_camptown_races_fiddle_tune_sheet_music.pdfIn PDF document text
    • http://lotibamuzuti.scienceontheweb.net/pidibufevadarolezi.pdfIn PDF document text
    • http://xenojupu.mywebcommunity.org/solek.pdfIn PDF document text
    • http://taxokijoba.sportsontheweb.net/jingle_bell_rock_lyrics.pdfIn PDF document text
    • http://kewokuxumuzig.medianewsonline.com/48794751386.pdfIn PDF document text
    • http://ranupila.mywebcommunity.org/tewonikixedefobileb.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/xetasif/kesinodukimarajuse.pdfIn PDF document text
    • https://s3.amazonaws.com/tarizirefevifab/case_information_travis_county.pdfIn PDF document text
    • http://kejusekijo.epizy.com/angles_worksheet_for_grade_4.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/234200b0-2840-434a-8dcf-cdeaa8cb0699/74210415574.pdfIn PDF document text
    • https://s3.amazonaws.com/xidulumexi/wimumuxipe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/258d72e3-a05e-450d-873e-4e964e715843/sugixevegemetusiriragupe.pdfIn PDF document text
    • https://s3.amazonaws.com/leteraxewe/main_characters_in_world_war_z_book.pdfIn PDF document text
    • https://s3.amazonaws.com/bejenosugede/gagufapa.pdfIn PDF document text
    • https://s3.amazonaws.com/towakog/charla_de_seguridad_covid_19.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dbb4626c-30cd-4868-9750-e7dad38ab2d0/is_samsung_crystal_uhd_any_good.pdfIn PDF document text
    • https://s3.amazonaws.com/ponivotigegepub/53202625610.pdfIn PDF document text
    • http://dixolasafu.epizy.com/sasexetizijusur.pdfIn PDF document text
    • https://s3.amazonaws.com/duzexefemosaxe/pebivivesupil.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_off00011bfd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BFD 5160 bytes
SHA-256: ce000b2402be6db1f224d7c0157553c8462618e28ff393520d9c5b13602e2057
font_01_sfnt_off00012d89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D89 13372 bytes
SHA-256: 2b6057b56078ab3d37dc12fa3653ca8c66d48af5bec81ff3c53e318591801b2a

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