Malicious PDF — malware analysis report

Static analysis result for SHA-256 24f84fc804d3d6b5…

MALICIOUS

PDF

64.9 KB Created: 2020-12-31 11:56:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 44196837b89ad29541ea350e90da98f2 SHA-1: 00e2a64d986dded096e7c13f2a4e4d462389ee55 SHA-256: 24f84fc804d3d6b575cd7b9b54bb7599d5d092bb45a08ba5df80f46dc18c0953
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous external links, with one pointing to a suspicious domain ('traffking.ru') that is likely used for phishing or malware distribution. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting a link farm or spamming operation. Although no scripts were explicitly extracted, the presence of external links and the ClamAV detection as 'Pdf.Phishing.Trojan' strongly suggest malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffking.ru/123?utm_term=climbing+up+the+walls+lyrics+terjemahan PDF link annotation
    • https://sogenaluvejor.weebly.com/uploads/1/3/4/3/134328850/e96ee61b005cf7.pdfIn PDF document text
    • https://cdn.sqhk.co/zedazisem/gi4gihb/personal_assistant_jobs_nyc.pdfIn PDF document text
    • https://cdn.sqhk.co/netesatova/hbhf0ge/mozusapi.pdfIn PDF document text
    • https://povutepumik.weebly.com/uploads/1/3/2/7/132741486/9722566.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/5a6c1c72-e8c4-42bc-94ad-f2f0d6b47726/zedusuporuvegafokobiwi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/92d8fae6-adb0-402e-9b4f-6c459df6ab73/reorganize_photos_by_date.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2e5daa4-de2d-466c-ac19-0f8078491152/dojozus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb86b2c9-f7db-4668-9450-5a5c7c0a6d6b/enriques_journey_full_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/97234948-ed49-4650-bb2d-e8907f3b8886/flexible_budget_report.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisigetizoxif/66912185743.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3fb56d4-178e-46c0-b14f-99ce5627570c/99325824368.pdfIn PDF document text
    • https://s3.amazonaws.com/wanasuvedigo/samsung_galaxy_note_4_user_manual_verizon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5131e9c7-8089-49f2-838b-96fcaf43aace/bixesan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d1301d06-99aa-40c1-9a11-b42746e4871b/55405196763.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_off0000bedb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBEDB 5664 bytes
SHA-256: 4a74e77f15f1731cd3e5cc38e343ccf99ad05f963014c4f1b877a557f087f7da
font_01_sfnt_off0000d209.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD209 10696 bytes
SHA-256: f13f54f865253cf59853c8548c36cd49f4d6bbf7ea78229bd76e96afce8c8d7f

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