Malicious PDF — malware analysis report

Static analysis result for SHA-256 27e25bef314de9bf…

MALICIOUS

PDF

67.6 KB Created: 2020-11-27 20:47:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 8766da516774631f6be0bf14629c9a99 SHA-1: 258ff0ba7c5b26b93e17b7aed23e2441a57e9123 SHA-256: 27e25bef314de9bf48524c1bddc0b806202de5fa47ccd7c71337e5bc240d157e
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://traffnew.ru/strik?utm_term=chanel+mobile+art+pavilion+zaha+hadid PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4467589/normal_5fbe0238d5e4c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391303/normal_5fa1ee1b31fd6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450438/normal_5fbde08607e5e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379842/normal_5f8ac808e59bf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474750/normal_5fb2dae770e82.pdfIn PDF document text
    • https://kukanoli.weebly.com/uploads/1/3/4/6/134641169/bazobabumejefijebopi.pdfIn PDF document text
    • https://xujaxivef.weebly.com/uploads/1/3/1/4/131438557/binefo.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/rikolesafuwofar/sadness_and_sorrow_naruto_piano_sheet_music.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c064e61-86fc-484d-b581-e0edad1ed9fc/76717113392.pdfIn PDF document text
    • https://s3.amazonaws.com/gagagakigibapo/53354068599.pdfIn PDF document text
    • https://s3.amazonaws.com/gumegulaxi/anganwadi_recruitment_2019_tamilnadu_application_form.pdfIn PDF document text
    • https://s3.amazonaws.com/palevijuj/tabular_method_gears.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85f6c588-6e72-441a-98b2-0ad3dd587a1b/porosojilelovewadojupori.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a7f2f87-2ede-41f2-a57a-5416a7027ede/loraturara.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

Related samples 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cd3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD3F 5176 bytes
SHA-256: f3fc63de9b23b1661d347c3ae971a03abadc2f8f0ea426910a25866bf73dac22
font_01_sfnt_off0000deaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEAA 10276 bytes
SHA-256: 3957eaa8dc25ffaa6d10991026fefde94ec3f070abe3a9fa6ac79fb594e07804

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