Malicious PDF — malware analysis report

Static analysis result for SHA-256 3490522c51ea36e9…

MALICIOUS

PDF

62.6 KB Created: 2020-11-18 07:39:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: b976fb0a6654029b2ad0e9c118d58673 SHA-1: c5c62ca87d3f22ce06f8edbe0240b9e497d801bd SHA-256: 3490522c51ea36e92797fded7c9b8a7d50c14b61982d6e3d67fdbfcfdffc299d
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a large number of external links, many of which are hosted on link farm domains, suggesting a phishing or malware distribution campaign. The ClamAV detection and ML classifier strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and numerous external links are indicative of techniques used to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffset.ru/aws?utm_term=guildmasters+guide+to+ravnica+map+pack PDF link annotation
    • https://rozapalevode.weebly.com/uploads/1/3/4/7/134705228/fanipuxabu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389108/normal_5f9c3391bfbde.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388839/normal_5f8d91e212613.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366989/normal_5f872abe4921c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462974/normal_5fab3f6e96120.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422371/normal_5faebd8078635.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365612/normal_5f98a5e38253c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370062/normal_5fb48fabdf307.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420037/normal_5fa590da1fcb8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/dfd1a7bf-234f-406e-8e64-ab0659a8e4bd/vesabokekuxolirasekiril.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d375aac-b369-4c2c-9108-af51b6363549/dowepitepebabavalisumujaz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd15e3b9-4e42-4a61-85e5-a98116578e24/gataloti.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ac4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC4E 5432 bytes
SHA-256: d80558782ce52543d3cfd895bf893326988c37c39a842a76954bcb6b01da24c4
font_01_sfnt_off0000beb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBEB7 9636 bytes
SHA-256: 0e971a086a8664ef14ee952e83813ba9bd1c198f9dd75ac5dd7c894b00ece58e
font_02_sfnt_off0000dfb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFB3 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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