Malicious PDF — malware analysis report

Static analysis result for SHA-256 253ed7ac354ac576…

MALICIOUS

PDF

73.4 KB Created: 2021-02-01 09:26:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 3aba6504eb6918380def726b00d90fb7 SHA-1: b0990a4b6aaca7a2a0e7eb6b56ffb228b371eab6 SHA-256: 253ed7ac354ac576653076b885041d2b4902aa214958204249c6a7c683097f93
156 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified as a link farm, with the primary URL being https://baarspo.ru/123. This heuristic, combined with ClamAV detection and ML classification, strongly suggests a phishing or malware distribution attempt. The embedded links likely lead to further malicious content or phishing pages.

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://baarspo.ru/123?utm_term=north+face+apex+flex+dryvent PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4393208/normal_5ffb39656e891.pdfIn PDF document text
    • https://lezafopiga.weebly.com/uploads/1/3/4/6/134628758/b417f9.pdfIn PDF document text
    • https://sovopubi.weebly.com/uploads/1/3/0/7/130775052/b19d9d6c42.pdfIn PDF document text
    • https://vogaxuruxav.weebly.com/uploads/1/3/4/3/134352923/c602287ed328c9a.pdfIn PDF document text
    • https://lotitarep.weebly.com/uploads/1/3/1/3/131383228/86647171.pdfIn PDF document text
    • http://nizuloxodiza.iblogger.org/adobe_animate_cc_2019_with_crack.pdfIn PDF document text
    • https://webegerux.weebly.com/uploads/1/3/4/7/134759049/3240834.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369191/normal_5feb9fc0d3676.pdfIn PDF document text
    • https://rowopubogapog.weebly.com/uploads/1/3/4/2/134234702/5f1757a3.pdfIn PDF document text
    • http://zuluwana.iblogger.org/facebook_album_down_album.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366627/normal_600c7674cde91.pdfIn PDF document text
    • http://dixojele.22web.org/animation_movies_free_tamilrockers.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381971/normal_60027e1a8bb7a.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/xalasawu/4._1_bondad_de_ajuste.pdfIn PDF document text
    • http://xevivalekivo.epizy.com/free_template_bootstrap_dashboard.pdfIn PDF document text
    • https://s3.amazonaws.com/wegemebufojafak/29464624053.pdfIn PDF document text
    • https://s3.amazonaws.com/zomuzigo/xmanager_passive_free.pdfIn PDF document text
    • https://s3.amazonaws.com/sazariwapa/23839971747.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_off0000debf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEBF 5264 bytes
SHA-256: e302753f1dc56b4541ed6d2f547e9f169e82ba235aa3d3b0d272ea5be37d8431
font_01_sfnt_off0000f0b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0B6 11448 bytes
SHA-256: ea501648457c5a662a29aab1749a18ca197d843238d04f59ea30d1e0fd46f4dc

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