Malicious PDF — malware analysis report

Static analysis result for SHA-256 e300939a45486e88…

MALICIOUS

PDF

67.8 KB Created: 2020-11-24 14:03:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 4f5c1870724bebba2873ee76a3c98275 SHA-1: b43028b4576aa92209d688e8b6d4571dac46b0c8 SHA-256: e300939a45486e8801c47fb022391246f78b70158beb6d7033f01354c7d909b5
214 Risk Score

Malware Insights

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

The PDF document was flagged by multiple critical heuristics, including a malicious redirector link and a link farm, indicating a phishing or SEO manipulation attempt. The presence of embedded URLs and the ClamAV detection further support its malicious nature. While no scripts were explicitly extracted, the PDF structure and embedded links suggest it is designed to lure users to external, potentially malicious, websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://traffine.ru/123?utm_term=the+marriage+zone+santa+monica+playhouse In PDF document text
    • https://cdn-cms.f-static.net/uploads/4494146/normal_5fade6161851f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379219/normal_5fa047f818540.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413566/normal_5fa05f0b9ae7a.pdfIn PDF document text
    • https://nenodomamik.weebly.com/uploads/1/3/4/0/134095987/gifutapij-navisosofetag.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414339/normal_5f963f26e4ecf.pdfIn PDF document text
    • https://fowimuwejagun.weebly.com/uploads/1/3/4/5/134529075/8507330.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384143/normal_5f90ce4b6191c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469643/normal_5fabd0b4a6622.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457563/normal_5fa96ff3e4e77.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369163/normal_5f8fad8b97992.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380543/normal_5f9732583e7c5.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/saxefi/grandpas_never_died_live.pdfIn PDF document text
    • https://s3.amazonaws.com/veraxawewib/66631517872.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_off0000cc64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC64 5448 bytes
SHA-256: 3a4168015b2d4fb75fe8dca7111892bba9f453ac9e8e0f5523d71346a2f46a70
font_01_sfnt_off0000ded5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDED5 10436 bytes
SHA-256: 9a985bb576c6bb4edf711992d82867fe22d5a3907e2204a3fb484366ac780795

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