Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa5f56da1d50ca58…

MALICIOUS

PDF

65.6 KB Created: 2021-03-03 14:15:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: c5511e7814de113ee59ac637af793248 SHA-1: 319a085a15f08ac88e4a6e4903e3d304637494bd SHA-256: aa5f56da1d50ca5807988c3a1f19c2699982cca351497960a0af040661981a48
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or phishing attempt. ClamAV detection and ML classification further indicate malicious intent. The embedded URLs are likely used to redirect users to malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9714

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://leonvi.ru/strik?utm_term=shrek+william+steig+1990 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4457298/normal_5fdce6236c198.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473403/normal_5fe7a1a23742c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382197/normal_60261326e5e6c.pdfIn PDF document text
    • http://fowirunuwajuk.iblogger.org/89256928080.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370299/normal_600953c0b0e9d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418972/normal_6007bdbee4da4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459922/normal_5ffd6673e801d.pdfIn PDF document text
    • https://lixebofupasiwik.weebly.com/uploads/1/3/2/3/132303312/xuwuso.pdfIn PDF document text
    • http://bezigex.iblogger.org/ieee_access_journal_template.pdfIn PDF document text
    • https://juvosibizojeguw.weebly.com/uploads/1/3/4/0/134040958/c57948e.pdfIn PDF document text
    • https://wunepilupizuxo.weebly.com/uploads/1/3/1/8/131857535/b6f7acbadfc1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366028/normal_60146e3143f42.pdfIn PDF document text
    • http://tebaxal.22web.org/canon_rebel_t3i_user_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/fovezewi/what_is_the_difference_between_remington_870_express_and_tactical.pdfIn PDF document text
    • http://kesopepi.rf.gd/fotamejidixij.pdfIn PDF document text
    • http://vuxujakovonad.epizy.com/46799548572.pdfIn PDF document text
    • http://zogutofarori.epizy.com/dofozes.pdfIn PDF document text
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE7C 6444 bytes
SHA-256: b2eb716f9f1f9b32722e1ea04f9b39d21e8999039eb4c7f2f5ede24790997a64

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