Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ee3cae797d62333…

MALICIOUS

PDF

80.7 KB Created: 2020-12-03 13:15:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 7d7d0d81d4ae5d1d7ac035d2929c2c82 SHA-1: 9bd8a57956b5891469d694273118a15c74926730 SHA-256: 7ee3cae797d62333cd4f9f3eb7325fb0d80ebe86f6169f7ed95e92646d426f22
214 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file exhibits malicious characteristics, including a high number of embedded links forming a link farm and a critical redirector link to a known malicious domain. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to lure users to malicious sites.

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://ggtraff.ru/123?utm_term=compounds+containing+kr+have+been+synthesized In PDF document text
    • https://xojozojejaxito.weebly.com/uploads/1/3/4/8/134866115/rebemanota-bowur.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488339/normal_5fb2753dca4eb.pdfIn PDF document text
    • https://kanolapegagidil.weebly.com/uploads/1/3/4/3/134339460/7e6f71e622f13e.pdfIn PDF document text
    • https://degujipimisa.weebly.com/uploads/1/3/1/4/131453395/3034736.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372721/normal_5f919bc054792.pdfIn PDF document text
    • https://vegilirebaj.weebly.com/uploads/1/3/1/0/131070576/jumiwix.pdfIn PDF document text
    • https://tupekado.weebly.com/uploads/1/3/4/5/134514551/lawuzevaribu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402478/normal_5fa51d370cd1b.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/9c056ba8-4c6f-4a7e-aa10-9e94f19d7624/xigaxuxe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6c864ee-c733-406e-9eb7-3698c6d28f49/vaxipas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88f712b8-94ab-4021-8bac-eb62b0b53698/world_in_balance_video_worksheet_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e7f7d66-7c5f-4047-89da-0645948e85f2/73944338911.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a3a7b31-0b1e-41f5-b47d-1f3355dd62b0/joxesokobejolamivu.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_off0000f7ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7AD 5776 bytes
SHA-256: bd85a1987208a8e0b10fe2909cb3824246bc00701b19ab73b8ec8f62f4264324
font_01_sfnt_off00010b3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B3C 12932 bytes
SHA-256: 6a9d5410b0ea219fbd8fb6c6a0c341c0601217b07d55a0cd05d5ab7e7a874d4d

Open this report in the interactive analyzer, or submit your own file for analysis.