Malicious PDF — malware analysis report

Static analysis result for SHA-256 78c84d2a55c12639…

MALICIOUS

PDF

75.8 KB Created: 2021-03-13 23:02:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 97326674acbc3ddedb7b24910f72a09c SHA-1: b11e926c13c5b40e6f398ad6fb6fa37416284158 SHA-256: 78c84d2a55c1263967e3d595b0c894116f5f4f8c47eb4150aed2ee4da13579e6
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that is likely used for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of an external URI and embedded URLs suggests the document is designed to redirect the user to a malicious site, potentially to download a second-stage payload.

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://resalured.ru/123?utm_term=babies+r+us+umbrella+stroller+manual PDF link annotation
    • https://tagasudinabasow.weebly.com/uploads/1/3/5/3/135325797/xezem.pdfIn PDF document text
    • http://zeboxagekej.sportsontheweb.net/the_strength_training_anatomy_workout_ii_free_download.pdfIn PDF document text
    • http://hd-cam-mirror-up1.club/can_personal_information_be_given_under_rti_act_2005tcewc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384820/normal_5fd644f5bef00.pdfIn PDF document text
    • http://lorubuxetorifa.medianewsonline.com/super_metroid_hacks_2020.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476445/normal_5fcbf37c53b22.pdfIn PDF document text
    • https://dejutuzalusabi.weebly.com/uploads/1/3/4/8/134869317/zixawazu-lunowo-xuwaxiwimaz-zesivuxitu.pdfIn PDF document text
    • http://brumbum3.xyz/bmw_r1200gs_adventure_service_manualiw266.pdfIn PDF document text
    • http://tells.fun/46915798733skuos.pdfIn PDF document text
    • http://joweponula.mywebcommunity.org/robufenufaguna.pdfIn PDF document text
    • http://mawosatejojeka.sportsontheweb.net/83318405113.pdfIn PDF document text
    • http://passive-income.ru/739639832y27eb.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/mulerux/25952487076.pdfIn PDF document text
    • http://samesesodore.onlinewebshop.net/19776621554.pdfIn PDF document text
    • https://s3.amazonaws.com/libeganot/rumis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/475cb8bb-c6a7-40f6-bded-e1e18f1f583b/bally_6000_slot_machine_parts.pdfIn PDF document text
    • https://s3.amazonaws.com/risisipajole/gift_card_box_template_printable.pdfIn PDF document text
    • https://s3.amazonaws.com/kefiperizonofu/ammyy_admin_3._5_version_software.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a9c4df5d-fb2e-4f27-a445-d84daac3f3f5/antonio_gramsci_hegemony_summary.pdfIn PDF document text
    • https://s3.amazonaws.com/tixedujegibex/mailchimp_template_full_width.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_off0000e8cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8CB 5020 bytes
SHA-256: b41986e813538aecd24c7a53e4626e280aaaea4c406bd881360070acb1c3f4ed
font_01_sfnt_off0000f9c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9C1 11240 bytes
SHA-256: 762b79afc609328e705be9bd42fbbe40aa5ba7c22ac7bff25b78111afa6ce841

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