Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bef92a6f596d3ec…

MALICIOUS

PDF

59.9 KB Created: 2020-12-14 13:26:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: e56aa0128ef5600ef0d5f95421f4d499 SHA-1: 37ffbb5937373c201add52eac2dcb69bb1bc1f3e SHA-256: 0bef92a6f596d3ec234693f5a7ca2855c38a6b0ce0282be45afdf38ca477e893
154 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, indicating a phishing attempt. The embedded URL is disguised as a manual for a popular coffee machine to entice users to click. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to deliver a secondary payload or lead to credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://ggtraff.ru/strik?utm_term=delonghi+nespresso+lattissima+touch+manual In PDF document text
    • https://cdn-cms.f-static.net/uploads/4465556/normal_5fc0d8fb4d192.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414487/normal_5fa0bb5cbc911.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472200/normal_5fc172c721f8a.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/zukogi/85048272644.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5a84892c50b1a1e97e4fb/t/5fccdd673ff1011540f077fa/1607261548302/9089171998.pdfIn PDF document text
    • https://s3.amazonaws.com/viromibukoleliw/batajutonizagifumi.pdfIn PDF document text
    • https://s3.amazonaws.com/pevarijidasalop/pirate_hat_template_free_printable.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0dd9b8ef7301f8b108504/t/5fcbde4066ddd570b002152f/1607196224079/drive_in_theater_los_angeles.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0055e5687f52b6b7c450a/t/5fc4fca408845d092426cd0e/1606745261685/4895287034.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e0eec90-2739-4e05-a174-d855aae67e68/14296736341.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/76b00ea1-446b-4fe4-a359-d5d3ed24d39c/alma_ilikileri_ve_etik_dersi_km_sorular.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/97fdd6dc-0ba4-4714-b435-91e3b71cfae1/13_days_in_hell_unblocked_games_google_sites.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_off0000af10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF10 5344 bytes
SHA-256: 90956059d079772fb24fbb883323eca6bb1887723b0ea55c26ed1449612d93cf
font_01_sfnt_off0000c118.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC118 10208 bytes
SHA-256: a2f8175998f5dc839ecae5f977682c367cffc515db3d1fe5ec0daacd548d56f8

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