Malicious PDF — malware analysis report

Static analysis result for SHA-256 00f216c70e345d5d…

MALICIOUS

PDF

116.7 KB Created: 2021-02-16 22:48:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 54ff2e724211a746227179d4c42c6941 SHA-1: 1dee86041d8cc999bddbc39365c7044937731ebf SHA-256: 00f216c70e345d5d9da5f18b6d267b1cca9f529ccfe2ef5fea72c7adc77f4f4c
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, a common technique for SEO spam or phishing campaigns. The ML classifier and ClamAV detection strongly indicate maliciousness. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to potentially harmful content, likely as part of a larger phishing or malware distribution scheme.

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://maypoin.ru/wix?keyword=what+did+enlightenment+philosophes+believe PDF link annotation
    • https://dejizova.weebly.com/uploads/1/3/3/9/133986792/wigot.pdfIn PDF document text
    • https://ruregogawumol.weebly.com/uploads/1/3/2/8/132815787/589842c.pdfIn PDF document text
    • https://lavabowigu.weebly.com/uploads/1/3/2/6/132682694/kevuk.pdfIn PDF document text
    • https://pamigewome.weebly.com/uploads/1/3/4/6/134631685/2cb42.pdfIn PDF document text
    • https://pidofuvu.weebly.com/uploads/1/3/0/7/130739764/rifefonodipitot-pakeliduti.pdfIn PDF document text
    • https://lonapumerupa.weebly.com/uploads/1/3/4/8/134853684/5576041.pdfIn PDF document text
    • http://vizilamu.22web.org/31176951055.pdfIn PDF document text
    • http://tinubovibiwiwi.iblogger.org/tekekisozufaxibi.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/bulolimepol/17395244340.pdfIn PDF document text
    • https://s3.amazonaws.com/pexodugosa/98800929360.pdfIn PDF document text
    • https://s3.amazonaws.com/rolefosiju/ms_word_business_case_template.pdfIn PDF document text
    • https://s3.amazonaws.com/nunakixuma/certificates_templates_png.pdfIn PDF document text
    • https://s3.amazonaws.com/figidireki/69954304246.pdfIn PDF document text
    • https://s3.amazonaws.com/daniwodug/89574447077.pdfIn PDF document text
    • https://s3.amazonaws.com/voropa/89488405514.pdfIn PDF document text
    • https://s3.amazonaws.com/tapelu/airport_city_android_1.pdfIn PDF document text
    • https://s3.amazonaws.com/boduxatavepe/72905690581.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_off00018e94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18E94 5492 bytes
SHA-256: 95fd8f97d67c9a2841e2a70ea63f5d1f9858e1a506e16c3df2d880065ddd0d42
font_01_sfnt_off0001a127.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A127 11036 bytes
SHA-256: 2af21168818e3c8f8096c72e5884992c9bf121e7ad347196f1c9545803d78f26

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