Malicious PDF — malware analysis report

Static analysis result for SHA-256 d514e68e348c8150…

MALICIOUS

PDF

70.1 KB Created: 2021-01-04 01:45:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 28199e2ccaa74026b97c803e7242f7a8 SHA-1: 982a418003b89def4533ab00d4a78d83d1b92f55 SHA-256: d514e68e348c81507a8845140b3c0b31ec34eb315d1987e893d787a2088c0e6a
214 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a significant number of embedded URLs, with critical heuristics indicating it links to known malicious redirectors and a large external PDF link farm. This suggests a phishing or SEO manipulation campaign. While no scripts were directly extracted, the presence of embedded URLs and the ML classifier's high confidence score support a malicious classification.

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://gettraff.ru/aws?utm_term=gambar+kartun+lucu+animasi In PDF document text
    • https://donedujawag.weebly.com/uploads/1/3/4/3/134315137/kemekurixilizupija.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382770/normal_5fc366cdc42d6.pdfIn PDF document text
    • https://dojumavuj.weebly.com/uploads/1/3/3/9/133997280/9119993.pdfIn PDF document text
    • https://lisogawe.weebly.com/uploads/1/3/5/3/135312855/6b7352.pdfIn PDF document text
    • https://cdn.sqhk.co/ditetona/hgAiehg/barbershop_2_streaming_ita.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444102/normal_5fdb628cd3d90.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366959/normal_5fa3c40a9ffb0.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/gixawetopoli/55446149344.pdfIn PDF document text
    • https://s3.amazonaws.com/towutoginadivu/cerebral_arteriovenous_malformation_pathology_outlines.pdfIn PDF document text
    • https://s3.amazonaws.com/jozetej/57223182827.pdfIn PDF document text
    • https://s3.amazonaws.com/boduxatavepe/16346839605.pdfIn PDF document text
    • https://s3.amazonaws.com/besafefaf/codingbat_array_1_answers_part_3.pdfIn PDF document text
    • https://s3.amazonaws.com/niporofez/video_er_app_for_pc_windows_8.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d754.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD754 5180 bytes
SHA-256: 16ff6fb695d7e5966be718850b72aa3545aa6d5c2d2b5e19e2f63d9b408183b9
font_01_sfnt_off0000e8e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8E2 10404 bytes
SHA-256: 71fb4690cb40753904cfd36e5b24684f306b54b1c2eb227c9ca2c3120baf9ecf

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