Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb979e37dcc5cfc9…

MALICIOUS

PDF

69.9 KB Created: 2021-01-02 12:48:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 9e49a91c7b32ccff91ed8ca5452e120e SHA-1: ea8a00cb61fb36e02c96ca96d201f498f53f9268 SHA-256: bb979e37dcc5cfc9b7449689e9629cdf69d38b070447a26069e4b3be61d984f1
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating a phishing or malware distribution attempt. The embedded content, though heavily obfuscated, suggests a lure related to 'Bluetooth for mac computer'. The ML classifier and ClamAV detection strongly support a malicious classification.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffine.ru/aws?utm_term=bluetooth+for+mac+computer In PDF document text
    • https://cdn.sqhk.co/zururodi/hVhdKZV/ice_cream_horror_game_download_android.pdfIn PDF document text
    • https://cdn.sqhk.co/fatobaliv/fGWhhdg/10152199787.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/f82b0c7c-4dca-4fb2-a9f7-799b557ac4ec/chemdraw_ultra_12_activation_code.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/31811134-6f9b-428b-8543-5c1957b051e4/vasos_para_micheladas_corona.pdfIn PDF document text
    • https://s3.amazonaws.com/rudelazifizuvo/sebirujuxasomu.pdfIn PDF document text
    • https://s3.amazonaws.com/defujo/blocked_out_game.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ddf1c02b-adba-4c45-a69d-ff038663a599/71768747307.pdfIn PDF document text
    • https://s3.amazonaws.com/daselex/81236872284.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/35b04767-341c-4b68-ba7a-4789bd08d112/70103973274.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5f1a181a-6dfd-4e74-817f-9a63d1eb1743/tafed.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_off0000d8a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8A2 5128 bytes
SHA-256: a6aa9001a3aff230b640e0dd2eea353d52b23dd7edbd11d1db81595f344ffbb9
font_01_sfnt_off0000e9e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9E5 9804 bytes
SHA-256: 2674723a9871a0aba9a2dfe59e845ea526af65c91c33c8a8e65c3b985cba88f3