Malicious PDF — malware analysis report

Static analysis result for SHA-256 b777fc17878cc3a1…

MALICIOUS

PDF

72.5 KB Created: 2020-11-19 09:02:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 447483f3de48a87c370e2f5398f2ebf2 SHA-1: 5bf6396a76f296c4f8d52c8520d31cebc21daeaf SHA-256: b777fc17878cc3a1285fe69ff0aac8aef8e6ad534de0012fe7dc20ac50484a5c
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://ggtraff.ru/strik?utm_term=glitches+for+marvel+contest+of+champ In PDF document text
    • https://cdn-cms.f-static.net/uploads/4410703/normal_5f9a574d08708.pdfIn PDF document text
    • https://jijidiwudop.weebly.com/uploads/1/3/4/4/134481930/9031478.pdfIn PDF document text
    • https://sijevunima.weebly.com/uploads/1/3/1/8/131859613/dfa3eb932d1c7a.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/pujinit/68243677581.pdfIn PDF document text
    • https://s3.amazonaws.com/ropuba/xibuvudebikuraxif.pdfIn PDF document text
    • https://s3.amazonaws.com/jusuberu/32099528397.pdfIn PDF document text
    • https://s3.amazonaws.com/wozoxub/the_number_song_logan_paul_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42de1985-dce3-4f4f-89c4-bb4a9df7dc06/glencoe_precalculus_chapter_2_answer_key.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7fd93f94-8524-4cf2-8531-55f699a84eff/tidepitewefazewutosilu.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/teresixonibinimo.pdfIn PDF document text
    • https://s3.amazonaws.com/vajefam/connectives_esl_worksheet.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bf3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF3F 5348 bytes
SHA-256: b2971864579675506737e95d12b6d1befb84cf1be531ada2c7f619d330634ad7
font_01_sfnt_off0000d143.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD143 1748 bytes
SHA-256: 37a3a951e0f3196744583439ea37fbaa8ddcf86155db07a6721a9458a0c3791f
font_02_sfnt_off0000d9b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9B7 10560 bytes
SHA-256: b4edfa3ed63d80bc822791483734fa3bbd6a3ec1897bc9246cf7c97c886bd8b0
font_03_sfnt_off0000fdde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDDE 16616 bytes
SHA-256: eb49df985c863db098e5748d60751e0bdf461ae071a7d58dcfe3683d2a7c527c

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