Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d62fe8936d70df9…

MALICIOUS

PDF

66.5 KB Created: 2020-12-18 22:51:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: db06be3a886ecae0635b7096218dd621 SHA-1: 0e8c2cd24463aa160785512ee26fdddf9b395410 SHA-256: 2d62fe8936d70df913ae2832c6e6f6c03180ed17d4a0b42dc3392526296c02c1
214 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF document contains heuristics indicating it is a credential phishing lure impersonating Facebook. It embeds a link to a redirector URL, which then points to another PDF hosted on weebly.com, likely serving as the final phishing page. The ML classifier and ClamAV detection strongly support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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
  • 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.
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://fogakorix.weebly.com/uploads/1/3/3/9/133997140/gukudunuwemata.pdf.
  • 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://ggtraff.ru/strik?utm_term=facebook+shake+to+report+turn+off In PDF document text
    • https://static.s123-cdn-static.com/uploads/4375361/normal_5fc91a225dede.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417675/normal_5fa8cebc3ec3f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388285/normal_5fbb6c06939c7.pdfIn PDF document text
    • https://fogakorix.weebly.com/uploads/1/3/3/9/133997140/gukudunuwemata.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368229/normal_5fd664d40e253.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/tezofuretejom/3119778170.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc784a563393450185475e5/t/5fce06762fa8bc6bcd0ec4fe/1607337594207/dumatomudipiziri.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fce0876ec433850594e313e/t/5fcf6334b8233e30dfaa90c4/1607426871314/war_of_independence_usa_movie.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d02e2944-95ef-4f5d-a3e8-0e9aeb4baeb4/99789843237.pdfIn PDF document text
    • https://s3.amazonaws.com/rirusozo/uc_browser_ko_kaise_kare.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_off0000c799.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC799 5228 bytes
SHA-256: 1304bee494c021990aecd8e2a4e16a901872fe0e1713d2299950cf79df8ddfd1
font_01_sfnt_off0000d95e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD95E 10608 bytes
SHA-256: 2456c935a3b0201a30477af87208863df1b738a371bef9cb8899b1b29eabc8da

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