Malicious PDF — malware analysis report

Static analysis result for SHA-256 80d8b9608e8578ba…

MALICIOUS

PDF

68.8 KB Created: 2021-02-06 13:12:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 11e848f094a554f31e4d0018499c23f2 SHA-1: 7bb780695904150ba35fc04a67aa090f669ddd05 SHA-256: 80d8b9608e8578ba1a41fc44de2d44436da83d3c8e11427c534e8ffc38147024
96 Risk Score

Malware Insights

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

The PDF file contains a heuristic indicating an external URI pointing to a suspicious domain, which is also listed as an IOC. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and the presence of external URLs are indicative of a phishing attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://bologen.ru/123?utm_term=gopro+hero+3+black+manuale+istruzioni PDF link annotation
    • https://cdn.sqhk.co/vitozogog/3rIIxuu/support_definition_biology.pdfIn PDF document text
    • http://itravelimpressions.com/lasunudewejimz618z.pdfIn PDF document text
    • https://cdn.sqhk.co/datisafapuv/k73UNgf/bollywood_songs_2019_party.pdfIn PDF document text
    • https://cdn.sqhk.co/medujebukoma/hkj0jhc/xbox_cloud_gaming_android_controller.pdfIn PDF document text
    • http://ourfanz.com/zotopugotoribawetirufigafpw55a.pdfIn PDF document text
    • http://prizinsta24.space/114_chakras_listcthli.pdfIn PDF document text
    • https://cdn.sqhk.co/gufezitaxato/QNhhji8/34027344272.pdfIn PDF document text
    • https://cdn.sqhk.co/vawadawuleja/fhjJT1y/tinkle_out_meaning_in_urdu.pdfIn PDF document text
    • https://cdn.sqhk.co/kekelivig/j9gdtk8/gijoxegumute.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/fakuguvil/bus_plural_form.pdfIn PDF document text
    • https://s3.amazonaws.com/dazemi/lapidejemaxegetelomekoni.pdfIn PDF document text
    • http://novoboninixeme.epizy.com/antidumping_manual_2015.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c394.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC394 5504 bytes
SHA-256: 4b842c03e29cac9f13b86bcca4c15a1869c513f84a081871797e67ec64656fd5
font_01_sfnt_off0000d62b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD62B 10048 bytes
SHA-256: b05ce06ac8e0fb6cb535a01e114dd6b8227d3967e7757b75764a27b35f2d4584
font_02_sfnt_off0000f87f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF87F 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333