Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe9ef33f1470a101…

MALICIOUS

PDF

69.2 KB Created: 2020-11-13 04:35:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 5dc5cd08e2966da5eafd050c4eb9a127 SHA-1: c1be0cb780d5a0e39e52f21c411405f24c61b499 SHA-256: fe9ef33f1470a101e40d897259579cae48278a2fbec0737115bbc76a4f4c8c95
104 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The presence of an external URI pointing to 'traffking.ru' suggests an attempt to redirect the user to a malicious site. The heuristic 'SE_DOWNLOAD_BUTTON' further supports the attack pattern of a deceptive download lure.

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
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffking.ru/123?utm_term=wild+tamer+cheat+engine PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366306/normal_5f874b644aed8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375196/normal_5f90305c993c8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372723/normal_5f939bb85def9.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/zupenafud/list_of_smash_mouth_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/lukepepe/pathfinder_rpg_house_rules.pdfIn PDF document text
    • https://s3.amazonaws.com/vatakefojunib/change_length_of_numpy_array.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ef23bfb-388b-45a1-9927-7b38eb9ba00c/vijiji.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/abd6961c-f9f6-4b0b-9879-31300169ed60/24541382100.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/libros_de_fibras_textiles.pdfIn PDF document text
    • https://s3.amazonaws.com/vatakefojunib/tikedegubezudapekuve.pdfIn PDF document text
    • https://s3.amazonaws.com/jimugivos/wunavisomuvibotuzal.pdfIn PDF document text
    • https://s3.amazonaws.com/voxazedisula/recalcitrant_account_holder_fatca.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bcea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBCEA 5188 bytes
SHA-256: bc074825968339ea06160b58e66d9256086257ace2aeca3863b6cacdca87c910
font_01_sfnt_off0000ce71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE71 10664 bytes
SHA-256: f494a445254bdd2d02ce1b68dfe1d09a6629791322a34264d5cd3ff46787a231
font_02_sfnt_off0000f345.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF345 16068 bytes
SHA-256: 2e6efdb6ec6b06881b73571a6dc11127da1b4fc0f11d045bd7c2e12cbfc92ea6

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