Malicious PDF — malware analysis report

Static analysis result for SHA-256 486e2210e74a22c4…

MALICIOUS

PDF

59.2 KB Created: 2020-11-13 01:02:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: f0968caef2b0725125b792dac5b4c62a SHA-1: 3aa02c0c02ab66551e5fb750918034d67a3ee9d9 SHA-256: 486e2210e74a22c4475cd3b5ff52b77f096cf76ef2d7fafd9570cdd8bd72c51b
214 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains embedded links that redirect to known malicious infrastructure, specifically `https://ggtraff.ru/strik?utm_term=rocket+league+dark+matter+price`. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'Rocket league dark matter price'. The presence of multiple external PDF links and the ML classifier's high confidence score further support a malicious classification.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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.
  • 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://ggtraff.ru/strik?utm_term=rocket+league+dark+matter+price In PDF document text
    • https://cdn-cms.f-static.net/uploads/4381976/normal_5f9f15dd1f4dc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369928/normal_5fa1b60bb7c61.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445341/normal_5fa0d56b201f5.pdfIn PDF document text
    • https://pulibunubof.weebly.com/uploads/1/3/4/3/134378852/7710872.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/69d581be-7bce-42b7-8029-2cbf7b1c20d2/3000258135.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e869e0ec-b027-415a-a0de-e8a333dd4308/78250781881.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ad5484c-aa69-48ca-a19c-c2cec0986914/wapirulibofukedixipoxodip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c5f2a8f9-0ea1-44d7-a63e-592deee9bc19/lds._org_hymns_sheet_music.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6bc195c9-dc1f-4ef5-bbdd-d4142e579292/39690357051.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/91503179658.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49685b45-fbaa-43ce-8d03-c42d4bb588e8/endless_space_2_ships.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe131799-6fcd-46ed-93e9-6cbbaa1421f4/religakededopinasebiguri.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_off0000abec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xABEC 5284 bytes
SHA-256: e633dc7234f571d7631f25f418b967047fb092aa8543036c74b4e9607de90280
font_01_sfnt_off0000bdd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBDD6 9988 bytes
SHA-256: b1785b3c0364b62803f8df4c987fd5cf69410d9ffbfe51cc32610ee74662d5c8

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