Malicious PDF — malware analysis report

Static analysis result for SHA-256 30d5c6efd38b93c7…

MALICIOUS

PDF

67.7 KB Created: 2020-11-18 07:27:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: e8c144d9142db91e430b81c37f3e3b3e SHA-1: 7f0721f2d485b07027c69f0db5b7cce06cc78caf SHA-256: 30d5c6efd38b93c7e874e8fd3adceef0e7cd1e566c8f6950d60d13ce4b676438
214 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with at least two identified as malicious redirectors. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM indicate that the document is designed to direct users to potentially harmful websites. ClamAV also detected this file as Pdf.Phishing.Trojan, further supporting its malicious nature.

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://traffking.ru/strik?utm_term=driver+whiz+review In PDF document text
    • https://jajipovel.weebly.com/uploads/1/3/4/5/134527293/efb5d9c0ba.pdfIn PDF document text
    • https://tetagusupawuwag.weebly.com/uploads/1/3/4/5/134586179/7d859ed3c34.pdfIn PDF document text
    • https://warimeso.weebly.com/uploads/1/3/4/7/134720830/kazedoxemolowuk_wodofeje_dalomopefedik.pdfIn PDF document text
    • https://rugurujumififez.weebly.com/uploads/1/3/1/3/131384765/0bb78c5306a.pdfIn PDF document text
    • https://miwilokak.weebly.com/uploads/1/3/4/3/134375457/wavulaxuruz.pdfIn PDF document text
    • https://kuvofexe.weebly.com/uploads/1/3/1/1/131163751/6fe73406a.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/napoledunadigo/67504535841.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/521ee262-7ffd-4d82-bba1-94f78163765e/sejozafidareravodu.pdfIn PDF document text
    • https://s3.amazonaws.com/gidibesuxi/70081897925.pdfIn PDF document text
    • https://s3.amazonaws.com/gagagakigibapo/newborn_head_to_toe_assessment_cheat_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/fekazudabo/possessivpronomen_dativ_bungen.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_off0000d0ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0AD 4552 bytes
SHA-256: 966774db4cc6728ed096d58ea597666e4f29af08289a47660ad8fb310065bca7
font_01_sfnt_off0000e03d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE03D 10032 bytes
SHA-256: 15f41d6ccc5dc5e402c587989f944a088e0d5b03cba6dc485ba6a2bc6a241910

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