Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2f1e059cac1a6f3…

MALICIOUS

PDF

68.2 KB Created: 2020-12-23 19:50:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 71918659a065332309fcb976d7298a41 SHA-1: 2540a7f35e6525d265a94b266abcf21c874aa87f SHA-256: d2f1e059cac1a6f35cdcee29f80fa60d63df2a4eacacdf90603c176f9fc038f4
154 Risk Score
Tags
free-cdn-ebook-manual-lure

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 'https://cctraff.ru/strik?utm_term=the+floor+is+lava+board+game+review'. This indicates the document's primary purpose is to lure the user to a potentially harmful website. The ML classifier also strongly flagged this PDF as malicious, supporting the phishing or malware distribution intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://cctraff.ru/strik?utm_term=the+floor+is+lava+board+game+review In PDF document text
    • https://cdn.sqhk.co/sukurorezib/EQuhgOv/free_knitting_patterns_for_reborn_baby_dolls.pdfIn PDF document text
    • https://cdn.sqhk.co/jasorevujoxu/DjbCzgc/32299861524.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374840/normal_5f8a847bef548.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410976/normal_5fa5b90895d94.pdfIn PDF document text
    • https://cdn.sqhk.co/zokasejiz/Mjijhgj/58444047252.pdfIn PDF document text
    • https://cdn.sqhk.co/purovufizu/ghggfcJ/dice_tower_top_100.pdfIn PDF document text
    • https://cdn.sqhk.co/liwewajawab/jjhLJic/nafinukiw.pdfIn PDF document text
    • https://cdn.sqhk.co/kapudome/hDhejgG/maze_runner_death_cure_cast_interview.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482406/normal_5fe1b55addd77.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380082/normal_5f928a4f7df92.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452206/normal_5fd9afa7008b1.pdfIn PDF document text
    • https://cdn.sqhk.co/kezulegol/pieihpP/69865698371.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/dovulavavo/boone_family_funeral_home_west_jefferson_north_carolina.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ffd73f4a-76a6-44e9-a3c3-a18d1d64859b/friedland_libra_d914_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/tarajix/62298920968.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4345a4d7-748d-4268-936f-9e2ff12868f6/watexowadibukukog.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_off0000cc68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC68 5564 bytes
SHA-256: 4fe016fffd960d552bc74a425ac649429902b2d21866a83fbf59cb7a9957a1ae
font_01_sfnt_off0000df3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF3E 10792 bytes
SHA-256: fb59be084ddd1c9dda03e9412aead0d654d182f3ff09c0c8a4a2b62d67da798e

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