Malicious PDF — malware analysis report

Static analysis result for SHA-256 eccfaaef95a1d8ca…

MALICIOUS

PDF

68.1 KB Created: 2020-12-31 05:16:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 3b2c0a814c07abbae8afa495c685c417 SHA-1: e6289effab102df05e153b6041d1c0dc33d4e722 SHA-256: eccfaaef95a1d8ca776678d89cb83eac95d35c481e758cb04fdd2989c9527875
162 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 and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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?utm_term=speech+therapy+complex+sentences In PDF document text
    • https://dimaxafazeza.weebly.com/uploads/1/3/1/4/131453031/zakeme.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/velowo_dakemolaku.pdfIn PDF document text
    • https://timifuxi.weebly.com/uploads/1/3/4/6/134676324/1877139.pdfIn PDF document text
    • https://xosavufubat.weebly.com/uploads/1/3/4/3/134346154/fusapulababibifa.pdfIn PDF document text
    • https://sezemizom.weebly.com/uploads/1/3/4/6/134622585/seligokonage.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/182bd710-77c2-4772-8da8-75354ca9201a/first_or_second_conditional_multiple.pdfIn PDF document text
    • https://s3.amazonaws.com/suxugipipolazog/sarah_jakes_roberts_books.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ca327ce-0ff2-4097-83c0-245b8fa258c5/10238670623.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a383d99f-0371-4b74-8824-beded51cfdc6/dear_woman_michael_reid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/69fea3e1-10e0-4bad-a58a-0b12f46b9548/fuzonumogidegugenovoneze.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c917c46-e8fb-4209-af43-91d5812621f1/41829715465.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/709af4a3-6fba-440a-addb-c312c4e8daa8/xolekajutut.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_off0000ce85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE85 5448 bytes
SHA-256: 065eeddd8e30c884be3c76b6a3132971e4127209b88f8aaa7de7bde6b68f375c
font_01_sfnt_off0000e0e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0E9 10272 bytes
SHA-256: 60689bb06173c535d570a82076a0e96183e48cf9e5140c342885a1b69e43208d

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