Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fb8694f32d9537d…

MALICIOUS

PDF

96.6 KB Created: 2020-12-29 12:01:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23
MD5: c64b8059a6104f2b3b836d67fe97a6b2 SHA-1: d4ec95a98b5cca23a7169621846c0900179acea6 SHA-256: 9fb8694f32d9537dd32b09815de891d2e7ddf3bf06c9a1878b070e0858cdae86
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF file contains numerous links to external websites, many of which are flagged as malicious redirectors or part of a link farm. The embedded content, though heavily obfuscated, suggests a lure related to 'Harry Potter' to entice users to click on these links. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://gettraff.ru/123?utm_term=harry+potter+y+la+c%25C3%25A1mara+secreta+libro+paginas In PDF document text
    • https://cdn-cms.f-static.net/uploads/4370057/normal_5fd09f1595857.pdfIn PDF document text
    • https://cdn.sqhk.co/tipefimex/DD1UihK/battlelands_royale_online_spielen.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451563/normal_5fc4bf7e61eb8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390069/normal_5fccc6ec4facc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387918/normal_5fc9a800e9f26.pdfIn PDF document text
    • https://kalulexo.weebly.com/uploads/1/3/4/6/134661683/4982048.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477658/normal_5fcd0f54727fa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385020/normal_5f9c6ffd5b54f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372972/normal_5feafca10583d.pdfIn PDF document text
    • https://nizesuvijeva.weebly.com/uploads/1/3/1/6/131607023/1740275.pdfIn PDF document text
    • https://xoredanixeg.weebly.com/uploads/1/3/0/8/130814516/debato.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/9db8a020-31bb-477c-ba07-09002eb56450/op_amps_and_linear_integrated_circuits_by_ramakant_a_gayakwad_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/mubefula/system32_drivers_pci_sys_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8988cb6b-943c-4088-9b50-e06decad3d57/99336482160.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_off0001357f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1357F 5688 bytes
SHA-256: 043d5af28fecc86f6d5d7504dd8fcf2d4e2f0d45c561aed1f8ab00dd0e83a1aa
font_01_sfnt_off00014839.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14839 13576 bytes
SHA-256: b5331801d9477442d8e87ca34da55943a9b24cbd68565f2f049ee01d049566de

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