Malicious PDF — malware analysis report

Static analysis result for SHA-256 c46edd755f5b74bc…

MALICIOUS

PDF

45.2 KB Created: 2020-10-15 08:12:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 363d8843638b7aa18191e07d121b2b21 SHA-1: f714a8f67a32fd2ac12abe7c95952ea7b7b2ea89 SHA-256: c46edd755f5b74bc0d96e272d0a993d4ebe4daa476381d93f1b42e91b4a4e753
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains references to the malicious URL and other suspicious URLs hosted on disposable domains. This indicates an attempt to direct users to malicious infrastructure, likely for further exploitation or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://gettraff.ru/123?keyword=filemaker+pro+17+missing+manual In PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/runemevurexuziwone.pdfIn PDF document text
    • https://jewajufigojoxi.weebly.com/uploads/1/3/1/4/131438211/xusati.pdfIn PDF document text
    • https://rabifupokuwu.weebly.com/uploads/1/3/1/1/131164250/91d2d21.pdfIn PDF document text
    • https://sesuwulot.weebly.com/uploads/1/3/1/4/131438847/dafujivilisig-jajetux.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365626/normal_5f87bbf220b59.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365599/normal_5f870dd7cb42c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365586/normal_5f87008052f65.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365525/normal_5f87266c8aa9a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367903/normal_5f87d48b7f536.pdfIn PDF document text
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/sijuwoxujupid.pdfIn PDF document text
    • https://zidabowejixu.weebly.com/uploads/1/3/1/1/131163559/3371746.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/lufapiki.pdfIn PDF document text
    • https://site-1036929.mozfiles.com/files/1036929/detovevixikis.pdfIn PDF document text
    • https://site-1036735.mozfiles.com/files/1036735/novuto.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/d6773f89-de88-474b-ac9f-2d2a6fe5cfb8/3367233337.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d5e0532-9b06-4304-bc9c-414f5afae947/vovusitorigabuzena.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7983704-7cca-4f79-9fdf-d0ff6953e1d2/pijedelitet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ebe1d515-afb8-40b9-ae27-c671081965d6/64436680690.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bab03910-45a0-408e-a5c4-e39210d829f0/gepudiroxabiz.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_off00006646.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6646 5092 bytes
SHA-256: fbd5d7ea7ab3031eb775d17a52a24615ae94cc44148abbf184d684e0e2998fe5
font_01_sfnt_off0000777e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x777E 9948 bytes
SHA-256: 6e39d79934e875208fa768971d9e6d45661f6cdef0fdd0274f34d69ef49ec42c
font_02_sfnt_off00009995.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9995 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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