Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a4ec82b2362e250…

MALICIOUS

PDF

65.6 KB Created: 2020-12-15 22:05:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 3749d122d2213784ac4341bb14e48b05 SHA-1: 71b81725f8e7c4dc7e5e72b9902f8772ce160346 SHA-256: 0a4ec82b2362e250416960d68340e575f48da98dd09d9cea55ee881df1c6c0fa
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating a phishing or malware distribution attempt. The embedded text, though partially corrupted, suggests a lure related to 'Rat queens pdf download'. The ML classifier and ClamAV detection strongly support a malicious classification.

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
  • 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://traffking.ru/123?utm_term=rat+queens+pdf+download In PDF document text
    • https://cdn-cms.f-static.net/uploads/4387433/normal_5f95887ec5aae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4498883/normal_5fad75ebbb05a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453332/normal_5fa73d0c3ba90.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375351/normal_5f91eb5897e72.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463262/normal_5fb8c4b4873c6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379733/normal_5fa0cd057a67c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463262/normal_5fac10c36f06d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366008/normal_5f8919ed74e9c.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/dd2cf501-983c-407c-b9b4-ea95b2ec3f03/tovagamitogipikokiraxu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a275acfd-6c7c-4d45-9527-a5305ad09be6/37205815162.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0f89a405d5340f329f2e6/t/5fc91759405cf6383d7fc5ca/1607014234068/dragon_ball_legends_hacked_account.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be214290-f331-4312-a893-420038aca733/96012497140.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db11dc36-4fde-4d3a-9436-4907da2672a7/melillo_middle_school_address.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/645efba3-09bd-4fba-9b2b-730625a4700f/judgement_day_2005.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_off0000c11a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC11A 5164 bytes
SHA-256: e63dd2bf57fd141efbca72af735072a0dc085e603cd1f60164bf2e8b8d951c45
font_01_sfnt_off0000d2db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2DB 11364 bytes
SHA-256: 1c48f5023f84bae70d84014fd37b91e58c0122dce9fcd1214c513d1c910d9bab

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