Malicious PDF — malware analysis report

Static analysis result for SHA-256 6fc1f67b602552b6…

MALICIOUS

PDF

35.9 KB Created: 2020-10-07 01:50:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: ddd90f4b1780b67007dac8157f99d8f9 SHA-1: 2060a0132a24a36d92f0bfd49a14b15298ccd484 SHA-256: 6fc1f67b602552b6108a351f1ed344938938a733af913072cbdfad9d27c2288b
94 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious URL, identified by the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic. The embedded content, though heavily obfuscated, appears to be a lure for the 'Fire Force season 2 episode 1 english dub'. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the primary malicious functionality is the redirection to the identified URL.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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://ttraff.cc/pify?keyword=fire+force+season+2+episode+1+english+dub In PDF document text
    • https://site-1037886.mozfiles.com/files/1037886/pufekotawukovojigejeveb.pdfIn PDF document text
    • https://site-1037176.mozfiles.com/files/1037176/disuzobexedaropalapofini.pdfIn PDF document text
    • https://site-1042888.mozfiles.com/files/1042888/lopobisafiw.pdfIn PDF document text
    • https://site-1044243.mozfiles.com/files/1044243/80679290437.pdfIn PDF document text
    • https://site-1038905.mozfiles.com/files/1038905/jabab.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/22951772-f15d-4812-b0a6-8811fedaf75e/situlibet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aff08718-ff57-4761-b64c-a24e8aed6516/63636315370.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4ad56ec-f9e8-4b5f-af8d-0d3016aaea58/xazejetojulutitinemi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef8f8ee9-8222-4262-9291-f78e57c952ee/981157398.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/22bee8fb-d5fd-4981-9da2-b4be5f4db628/83831437786.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/1042/3456/files/ultra_power_car_parts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0621/4819/files/mufasarixokokedonoxozem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0470/0022/3896/files/64542181104.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0477/0952/0028/files/instrument_approach_chart_legend.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000042f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x42F7 5496 bytes
SHA-256: 3d5ea6f910b79f6eb43b1fa449bd12e52f8ab0f3cd9e521b120b35968773453a
font_01_sfnt_off00005596.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5596 9124 bytes
SHA-256: c6714f79438cd023acb05b19a58908161cee0da8745c2540a1b4013f271d34fe
font_02_sfnt_off000074b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74B5 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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