Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e48a50d6f0b00ea…

MALICIOUS

PDF

123.4 KB Created: 2020-11-29 02:57:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: d646e0de839e794ec12d19bd0059516e SHA-1: b5351f0cd8411a2980479e1eb1515df6b7c66f94 SHA-256: 2e48a50d6f0b00ea09b595d65b8c464ff6fd3a8c33b1691ffd9be17994cd7575
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The document contains a large number of external links, many hosted on disposable domains, which is characteristic of SEO spam or phishing campaigns. The embedded URLs suggest a redirection mechanism to potentially malicious content or further stages of an attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://trafficel.ru/aws?utm_term=nachiketa+all+song++pagalworld PDF link annotation
    • https://sojomirolasa.weebly.com/uploads/1/3/4/3/134325131/baludu.pdfIn PDF document text
    • https://kapelomapo.weebly.com/uploads/1/3/4/7/134737659/fofufe-jinalodubutifin.pdfIn PDF document text
    • https://rawabibag.weebly.com/uploads/1/3/4/8/134870232/parip-datawegapanew-tikirirubetopuz-lunixuv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444850/normal_5fa780de09b02.pdfIn PDF document text
    • https://sugabora.weebly.com/uploads/1/3/4/3/134369176/kamelamu-jepifulabudet-kurubaper.pdfIn PDF document text
    • https://jalewigevat.weebly.com/uploads/1/3/2/6/132681207/1365092.pdfIn PDF document text
    • https://panidulupeju.weebly.com/uploads/1/3/0/9/130969186/rexuzemufapi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385010/normal_5fa28504b1d2b.pdfIn PDF document text
    • https://safadusuxujex.weebly.com/uploads/1/3/4/3/134319972/vizutopatute.pdfIn PDF document text
    • https://pewixuzapama.weebly.com/uploads/1/3/4/6/134655392/xubofa_roduxokifuk_gelanaj_ritewele.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369318/normal_5fb81c556394c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/f3286d8e-f3ce-41cc-9fd0-a65c2acd0bec/nemojagufepime.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84712d7a-efbb-44ab-ba75-a3bc9fdc6b0b/12995185269.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a22d891d-41a6-4a03-848a-d2ec5c0493a9/vumezagazeku.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_off0001a844.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A844 5460 bytes
SHA-256: 2eb3adcd8bf8b5403e2c2b0b1e6b0e748ae82e608032434698cf76e55535961a
font_01_sfnt_off0001bae7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1BAE7 11380 bytes
SHA-256: cf6eec6f023cadf9d8d9cd4379957c4e645e8f194d3815e292d243bf7e944340

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