Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2c0972f6340af5b…

MALICIOUS

PDF

43.8 KB Created: 2020-11-05 03:33:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 88805d77816e6c8e7e9273584332b62a SHA-1: 726743d2779e47cca7b7f2d000ac86b740783229 SHA-256: c2c0972f6340af5b1bac90276e4dbad6a755a4ba9c303236fd707a4043cd82dd
94 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to a URL that is likely part of a phishing or malware distribution campaign. The document body, though heavily obfuscated, contains the same malicious URL, suggesting an attempt to trick users into clicking it for a fake resource. No scripts were extracted, but the presence of the malicious URL is a strong indicator of malicious intent.

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://cctraff.ru/strik?keyword=the+resolution+for+women+pdf+bible+study In PDF document text
    • https://cdn-cms.f-static.net/uploads/4387420/normal_5fa1df839e985.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/leteraxewe/algebra_1_volume_1_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwawibu/174388934.pdfIn PDF document text
    • https://s3.amazonaws.com/gujutavevive/langman_s_medical_embryology_9th_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/zijivevip/pomefigesulojexaxasosevu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/971acaeb-9a14-4514-9dad-0b2d906c9613/97316878196.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/21d6a2ab-b527-4a93-a05f-d5191420142c/33390644171.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxulikiwab/centrifugal_pump_operation.pdfIn PDF document text
    • https://s3.amazonaws.com/nezanurugega/java_array_exercises_with_solutions.pdfIn PDF document text
    • https://s3.amazonaws.com/rorives/behavioral_economics_for_dummies_download.pdfIn PDF document text
    • https://s3.amazonaws.com/jepavilutabilel/minecraft_hacked_pvp_client_1.8.9.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b25d2b4-2953-4784-9cc6-da90fdbc3be8/95971778807.pdfIn PDF document text
    • https://s3.amazonaws.com/mokavilez/wilal.pdfIn PDF document text
    • https://s3.amazonaws.com/tojabixefova/27508918104.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/mivetilifusogibonajolo.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_off00006a8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A8E 5352 bytes
SHA-256: 2c1783338db81cebea130a1e11057814de1e220595c7f0df0d82500952d819c1
font_01_sfnt_off00007cab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CAB 11052 bytes
SHA-256: 136c3228dc87abe7faecd24c30118f19f12a40b7f5e5af27100d2610ccebc1b7

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