Malicious PDF — malware analysis report

Static analysis result for SHA-256 56f016e0ade55092…

MALICIOUS

PDF

70.4 KB Created: 2020-11-19 17:07:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 67a4ae9123ab776ab1eefd457299ec06 SHA-1: 7b5054bf76fa2480b19ce7a4d860efc1f8e05680 SHA-256: 56f016e0ade5509296875e12dc0e4b21da6429a7688d24f768b44c20984b5e78
214 Risk Score

Malware Insights

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

This PDF file contains numerous links to external resources, with one critical link pointing to a known malicious redirector. The document body, though heavily obfuscated, suggests a lure related to 'Dungeon Defenders 2'. The presence of a malicious redirector indicates an attempt to lead the user to a malicious site, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://traffking.ru/wb?keyword=dungeon%20defenders%202%20guide In PDF document text
    • https://kokubexajaluk.weebly.com/uploads/1/3/2/6/132681668/6586caa34d0f.pdfIn PDF document text
    • https://tadadali.weebly.com/uploads/1/3/4/0/134095934/9748308.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404524/normal_5fa5a38fe84de.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/3fea2d58-2daf-4bc5-a64a-82105ac1b9ea/4124492894.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17b1e8e0-db03-4b17-b6cd-00676ca08c00/bergeys_manual_of_systematic_bacteriology_volume_5.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/09c8eed3-fa66-4d68-a89b-d2c642b63a7c/rawozobajabokof.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/sales_manager_resume.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6503b9e5-5682-486c-90c1-263bb8fbdca5/dobegegumegasif.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/59bac562-0529-4f15-854d-ef7e7cdc9876/rorogowolexedeluziwep.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0caa80f-b463-4fed-a83b-3de15c5ae3cc/89503745859.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f299e4e5-6267-45e6-930d-1e24a72a6bd7/cups_to_pints_song.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_off0000d6db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6DB 4964 bytes
SHA-256: e3831722dfece48363d60ccdab647ebfecb5c27d8d4b5811544a025fb07590b7
font_01_sfnt_off0000e7e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7E1 11036 bytes
SHA-256: 4f42ccefe57fcf285b4c41d7d960ba619d99d626298f4e0c47f96e161b8b823b

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