Malicious PDF — malware analysis report

Static analysis result for SHA-256 84b56351297663f8…

MALICIOUS

PDF

69.9 KB Created: 2020-12-26 21:43:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 6f9c8fa4bb3808022bbfd6f54849413f SHA-1: 9fe7d9962a0aa070d5c6677f662f4c8e29f5b604 SHA-256: 84b56351297663f8506f976197549249bd2f295b0306042d348e6a90e7ed9700
154 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a song download, which is a common phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded malicious URL suggest it's designed to redirect the user to a phishing or malware download site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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.
  • 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://traffmen.ru/aws?utm_term=dj+video+songs++telugu+audio In PDF document text
    • https://cdn.sqhk.co/gemadaruvow/4RHJGjf/novidewowivobejixujelir.pdfIn PDF document text
    • https://cdn.sqhk.co/dadakafopina/jjgdghv/neweveruxavakujemusinib.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378843/normal_5fd6735164c92.pdfIn PDF document text
    • https://cdn.sqhk.co/kepebeso/gjdLh8T/best_pinball_games_pc.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/nopomewegobij/patofisiologi_penyakit_antraks.pdfIn PDF document text
    • https://s3.amazonaws.com/wenobagupexekap/dewadomuvotuj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be890b5d-bffc-4aa9-a390-aba91d207425/running_distance_tracker_watch.pdfIn PDF document text
    • https://s3.amazonaws.com/sazomo/imagine_dragons_birds_lyrics.pdfIn PDF document text
    • https://s3.amazonaws.com/xovekolamoxe/xuvotogorusafi.pdfIn PDF document text
    • https://s3.amazonaws.com/kitakilesa/79446598140.pdfIn PDF document text
    • https://s3.amazonaws.com/fexuror/95955825983.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/aditya-_hridayam_download.pdfIn PDF document text
    • https://s3.amazonaws.com/voxazedisula/fart_piano_songs.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_off0000d40f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD40F 5032 bytes
SHA-256: 1297173432bab30a4271d28f975b8b59e989afe295aae8095b9f4026c1e9e1d2
font_01_sfnt_off0000e556.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE556 11024 bytes
SHA-256: 7606db9ac83701798e57a4127bda57b4af15e831b561801f0ba6d9164395bfe2