Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5fdbc6b7f717f33…

MALICIOUS

PDF

80.1 KB Created: 2021-05-21 19:40:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: c0b71e5167d40a963586a7a312376901 SHA-1: 0ed1128afb2dc7a10aae96d7e8b259e4220d7447 SHA-256: f5fdbc6b7f717f33d4e535138cb0f893784a9ed46839fb8a2690b032af58fca3
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://ponafet.ru/strik?utm_term=barbie+filmleri+%25C3%25BCcretsiz+izle PDF link annotation
    • https://winakafefumo.weebly.com/uploads/1/3/1/3/131397983/sagexalejasorevi.pdfIn PDF document text
    • https://dalatomim.weebly.com/uploads/1/3/4/3/134344090/putasupaloza-kipot-wurajedegas.pdfIn PDF document text
    • https://lififotepul.weebly.com/uploads/1/3/4/3/134339298/daredixaranurajok.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404123/normal_603187b4174e8.pdfIn PDF document text
    • https://nikoxutaju.weebly.com/uploads/1/3/1/3/131378952/6028885.pdfIn PDF document text
    • https://rikidunojig.weebly.com/uploads/1/3/4/4/134488605/71154.pdfIn PDF document text
    • https://wugepazi.weebly.com/uploads/1/3/4/3/134348030/vovubib.pdfIn PDF document text
    • https://xejinifinedi.weebly.com/uploads/1/3/5/3/135305438/xivutosijofejemol.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474989/normal_60334ea4691d6.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/donarepemi/selenium_automation_testing_interview_questions.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxuledo/33040335503.pdfIn PDF document text
    • https://s3.amazonaws.com/faxaxos/paxixowinixuxumori.pdfIn PDF document text
    • https://s3.amazonaws.com/podawakumepewez/buwofaliwigib.pdfIn PDF document text
    • https://s3.amazonaws.com/wikurixobelu/38764211215.pdfIn PDF document text
    • https://s3.amazonaws.com/dogazisuze/44918510869.pdfIn PDF document text
    • https://s3.amazonaws.com/tiluwisulepam/27271547882.pdfIn PDF document text
    • https://s3.amazonaws.com/waxapoz/28949824054.pdfIn PDF document text
    • https://s3.amazonaws.com/tibitexil/vomovu.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_off0000f876.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF876 5388 bytes
SHA-256: 752a893567336a5a2e596185dcb56b5506d58f4b645ae457656588dcafa1dbe7
font_01_sfnt_off00010a87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A87 11408 bytes
SHA-256: 5614ae520f9e6fdd03b6bd45356a7b383318c3698c812e2de63e4b205e1f8777

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