Malicious PDF — malware analysis report

Static analysis result for SHA-256 cfb6e1bda690d8a7…

MALICIOUS

PDF

69.9 KB Created: 2020-11-14 03:08:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: a2b3c183916710a5ae1c3b473c7704f5 SHA-1: 5c908d1768f5fedc1833168e09b66eade9d79e4a SHA-256: cfb6e1bda690d8a7d7a334e0d5386f9ece75b04b9466f13023affee14ec633ca
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://traffking.ru/123?utm_term=likeness+of+oryx+boss+battle PDF link annotation
    • https://votarozoxanobo.weebly.com/uploads/1/3/4/3/134315144/0a41c564bb4a.pdfIn PDF document text
    • https://farenutatovepo.weebly.com/uploads/1/3/4/5/134502273/zemasesisaro_ronikuledo_panufujexab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427783/normal_5fa77de68e462.pdfIn PDF document text
    • https://tibanevugite.weebly.com/uploads/1/3/4/6/134655495/kopofuferekusudago.pdfIn PDF document text
    • https://jexenixikejov.weebly.com/uploads/1/3/4/6/134632916/majetozizezaka.pdfIn PDF document text
    • https://salofapaj.weebly.com/uploads/1/3/4/3/134314320/xiditapibukizod-kusixufirilasok.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/jajoxulabojaso/lazipuz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7cb2af0-0222-4294-bb08-bc6e9a0bcef7/nakajima_280l_service_manual_free.pdfIn PDF document text
    • https://s3.amazonaws.com/genedonapubefe/xasikepivojiroloteladelox.pdfIn PDF document text
    • https://s3.amazonaws.com/rekorewexidiwo/fotexubupigetoke.pdfIn PDF document text
    • https://s3.amazonaws.com/kozibowisenatu/besm_d20_character_folio.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b774d87a-1fb8-4e77-ab2d-7d9a863b283d/67231746323.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_off0000d08e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD08E 5076 bytes
SHA-256: c9f80a41312fc29060de0b2f846ce1412871cb26ab71a176dcbd5127e7407914
font_01_sfnt_off0000e1f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1F7 11912 bytes
SHA-256: 9018d201276af6046d761a20f5304066beaf3902e986c2c973a9d70689acaa2b

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