Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4d5a693452f3f21…

MALICIOUS

PDF

67.8 KB Created: 2021-01-06 14:22:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: fcb38d771d6cd130417b8f391f889a7b SHA-1: e9f5e79adcd54dc3fc2e5e3013c4d6c045760ed3 SHA-256: d4d5a693452f3f212990752d7cee801efd93d0479b92b5767ed59e3d00755a52
214 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file is identified as malicious by multiple heuristics and a machine learning classifier, indicating it is likely a phishing or redirection attempt. The document contains a link farm pointing to known malicious redirector infrastructure, specifically 'ggtraff.ru', and numerous other PDF links, suggesting an attempt to distribute further malicious content or engage in SEO manipulation for malicious purposes. The presence of embedded URLs and the overall structure strongly suggest a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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.
  • 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://ggtraff.ru/aws?utm_term=70s+platform+shoes+to+buy In PDF document text
    • https://cdn.sqhk.co/gimexigerub/jjiHheC/mini_ninjas_xbox_one_controller.pdfIn PDF document text
    • https://doruxajowivabog.weebly.com/uploads/1/3/4/8/134870444/binasevasa.pdfIn PDF document text
    • https://cdn.sqhk.co/tiwumixe/jggd4WB/wasegoxefivi.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/7c5936be-a62b-49ad-bb8c-d10d4fadfa72/79611012844.pdfIn PDF document text
    • https://s3.amazonaws.com/tomamujuf/software_company_profile_examples.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/276bbb2f-5bbe-43da-afb2-6979bd76d4e5/zosobipafudiniwe.pdfIn PDF document text
    • https://s3.amazonaws.com/nisoxow/zolirutezuviwisaf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4ff9859-ec15-48a9-ab9e-e4dbf3819039/suzamubuduketumigewo.pdfIn PDF document text
    • https://s3.amazonaws.com/bovenotojitowe/tidaxonadakitasisawekav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d418e6c6-c06d-447b-b546-b308de7288eb/blackburn_fluid_trainer_manual.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_off0000ca9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA9E 5508 bytes
SHA-256: b184cda927deb27847bb8b0430eb02eeace44f88d97c5da6a4acb9b209e80f7d
font_01_sfnt_off0000dd35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD35 10724 bytes
SHA-256: 2dc81b0b4043f7c426ac825d657cc19b7b5f7cf72b49caf5b56a6074bdea67f5

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