Malicious PDF — malware analysis report

Static analysis result for SHA-256 49a8df31075d0156…

MALICIOUS

PDF

62.3 KB Created: 2021-03-04 04:16:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: cd0fe4f40f5dc8912d01a1239715a873 SHA-1: a89ae301b93a6272c95f20b8e0c80233b3d186a3 SHA-256: 49a8df31075d015697479a18cb13c07721a132f40bce2c350fcf6d9a2c0cd434
154 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which are SEO-themed, suggesting a link farm or phishing attempt. The ClamAV detection and ML classifier also indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and heuristic firings point towards malicious activity, likely involving the distribution of further malicious content or phishing lures via the embedded URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7166

Heuristics 4

  • 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
  • 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://dugedepap.ru/award?keyword=chinese+grammar+wiki+book+elementary+pdf PDF link annotation
    • https://tufobedix.weebly.com/uploads/1/3/4/4/134431979/6eda8f52dc9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376625/normal_5ffe505e7615b.pdfIn PDF document text
    • https://cdn.sqhk.co/nosimasiv/JVhhZjd/rolling_stones_tongue_shirt_black.pdfIn PDF document text
    • https://miremewokar.weebly.com/uploads/1/3/0/7/130738658/febafise.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496378/normal_5fed4fe24ef73.pdfIn PDF document text
    • https://vajipexinonadol.weebly.com/uploads/1/3/4/0/134096003/4564837.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/poguvelefa/free_debt_validation_letter_template.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxawetawupo/do_guide_dogs_get_enough_exercise.pdfIn PDF document text
    • https://s3.amazonaws.com/tazibabebamep/36217909492.pdfIn PDF document text
    • https://s3.amazonaws.com/xupimaral/gebitegeveworokexusojafow.pdfIn PDF document text
    • https://s3.amazonaws.com/metakibeme/nababapexajoteporiteb.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ceaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEAA 5756 bytes
SHA-256: 2ad0ee1d2f7dd665abe9a528bd2a169d5c644d2f1eeff8a60e954fb42063e08b

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