Malicious PDF — malware analysis report

Static analysis result for SHA-256 23025382eda839af…

MALICIOUS

PDF

65.7 KB Created: 2020-12-02 16:14:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 946e9557f00abb4f85e4a1c3060e6749 SHA-1: d7407bafa01c72d5b1342c1dce216366402b9d8b SHA-256: 23025382eda839af3962a92318963a7ccd5f139d72a5c8391bad0b7454aeade8
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://trafficel.ru/123?utm_term=og+mandino+scroll+6 PDF link annotation
    • https://porelananov.weebly.com/uploads/1/3/0/7/130775759/5cb32b3a7f.pdfIn PDF document text
    • https://wumefabifu.weebly.com/uploads/1/3/4/8/134888429/9332058.pdfIn PDF document text
    • https://xalosexi.weebly.com/uploads/1/3/4/6/134685437/4366284.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367281/normal_5fb513ba4d211.pdfIn PDF document text
    • https://bituxusod.weebly.com/uploads/1/3/4/3/134347303/6a0596a64f4474e.pdfIn PDF document text
    • https://wanezetisozol.weebly.com/uploads/1/3/4/4/134468493/9966144.pdfIn PDF document text
    • https://nabutamu.weebly.com/uploads/1/3/4/5/134525390/114241.pdfIn PDF document text
    • https://xifobosakup.weebly.com/uploads/1/3/2/8/132815359/nepav-xilawi-jusixomexotule-vipugomosis.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc1116c11f6a41984869c2f/t/5fc302122dd96f59185188dd/1606615571649/fane_of_the_night_serpent_key.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc554c4116eb00e3c69664b/t/5fc5f106fa04221c71ed3498/1606807814314/buttermilk_trail_richmond_va_directions.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc543c1a5bc066edfc25575/t/5fc75ff8b7521d608a44eaf8/1606901756841/tizowosugavomul.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0028ac14dfd36feec75cc/t/5fc1567a4e98326c024221f0/1606506107525/a_love_to_last_june_9th.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 8

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_off0000c611.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC611 5440 bytes
SHA-256: bdecbca9807d422513937219aed139ac79ada4cce976878c7723b3891be9b0b5
font_01_sfnt_off0000d86d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD86D 9872 bytes
SHA-256: 7c78362a1369c807e12f2a9a358a73c33f349db403b0e6cee49fa2b5d8c09905

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