Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b8c118f236a36b1…

MALICIOUS

PDF

72.8 KB Created: 2020-12-13 22:22:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 3c21716b81d71a90fd5d92ea6b315747 SHA-1: 1df578c95e68708b2fa47b0111d91330afb8e142 SHA-256: 2b8c118f236a36b1ad575258ae4502791775c01e81c06179fa9b3c491be37a5c
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ggtraff.ru'. The document body, though heavily obfuscated, contains keywords related to 'Hurricane Katrina tracking lab answers', suggesting a lure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://ggtraff.ru/123?utm_term=hurricane+katrina+tracking+lab+answers In PDF document text
    • https://cdn-cms.f-static.net/uploads/4499317/normal_5fbbe6eb5451a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366034/normal_5fa4321812d53.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488855/normal_5fc295207b394.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377380/normal_5f9a76efc8df3.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/16e6eebd-d3df-43a0-8d81-911d02e21cf9/larebulomuninevusoban.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwuxot/kingdom_hearts_3_duration.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f63d4782-79be-4cf5-b94b-339e56ddd965/catering_en_Durham_North_carolina.pdfIn PDF document text
    • https://s3.amazonaws.com/magapeguwabe/angular_dynamic_forms_module.pdfIn PDF document text
    • https://s3.amazonaws.com/ribowexulo/transformers_bumblebee_2018_cast.pdfIn PDF document text
    • https://s3.amazonaws.com/jonora/examiner_report_cie_english_1123.pdfIn PDF document text
    • https://s3.amazonaws.com/xukonakefules/flannelette_sheets_ebay_au.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0eedcef0-4bb4-47e0-96dc-50fba4d39227/larepinexutidorifaje.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f5be3cf-14c8-4b5b-b2c2-6139fe7ba1c5/89391820861.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6087ba3e-3e23-4f69-9bec-f3410e018cb4/pole_vault_plant.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4de4ce61-e893-4209-bbd1-f6477329c03d/mofisifikile.pdfIn PDF document text
    • https://s3.amazonaws.com/zikeko/barry_has_a_secret_unblocked_games_76.pdfIn PDF document text
    • https://s3.amazonaws.com/xunilukegez/labuzuvuma.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_off0000d2d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2D6 4996 bytes
SHA-256: 620bca26f211e51a067063995f81e4c4129cdd5db1c5e99b26ff7754749fb0b5
font_01_sfnt_off0000e3ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3EE 10576 bytes
SHA-256: 704c850f61f1e6bb65bff8b0647ecb17330da06ca78d288f8ffb983fa5677d50
font_02_sfnt_off000107e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107E5 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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