Malicious PDF — malware analysis report

Static analysis result for SHA-256 16b6f6d782d92f44…

MALICIOUS

PDF

69.7 KB Created: 2020-12-23 00:58:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: edae04961bc4e0c630ab70abcf3d3d87 SHA-1: 3322d471dad546ef465698bf26fae0e3d66f4832 SHA-256: 16b6f6d782d92f4446b382124382269ccf6d0290f6ff72fdf6fd8b505b1ee3ee
104 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL pointing to 'trafftec.ru' which is likely the download location for a secondary payload. The document body, though heavily obfuscated, contains text related to 'Pixel car racer mod supercars' and a download lure, suggesting a phishing attempt to trick users into downloading malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://trafftec.ru/strik?utm_term=pixel+car+racer+mod+supercars PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4370286/normal_5fcdddb05cb8e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462035/normal_5fc907c2c3b21.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/negonanopix/screenshot_windows_10_app.pdfIn PDF document text
    • https://s3.amazonaws.com/nonipesikiri/articles_on_caribbean_culture.pdfIn PDF document text
    • https://s3.amazonaws.com/liguwubore/adobe_acrobat_pro_dc_ipad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/250bb0e5-f47c-4709-83a5-58cb9797e12f/kuvorisenoxazopupol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b1a30c5-bc57-4437-9424-696a9315cd5d/think_thru_math.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c1cb9c0b-4518-4c57-b685-c268c0219c50/john_long_middle_school_rating.pdfIn PDF document text
    • https://s3.amazonaws.com/zuguvoxoki/vpn_for_pc_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/74819a91-45a8-4060-a276-2d570c9f00ea/4759051539.pdfIn PDF document text
    • https://s3.amazonaws.com/xefejevife/65319583752.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc55d4d8ef7301f8b2ec065/t/5fccf08b2fa8bc6bcdea3e7e/1607266444949/galaxy_core_live_hd_wallpapers.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6b4b2d8e4f4479961d0df/t/5fcd67b3c00f007ceafb39c9/1607296949060/30131096379.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/829a072e-de9b-4c54-be51-40fdba03187f/data_mining_concepts_and_techniques_2nd_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/turip/77309827554.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_off0000d32a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD32A 5288 bytes
SHA-256: 9a66122c4de73bd013c9718a6c4f6f5d793bbf773df1c97cb909e8b4732e6e51
font_01_sfnt_off0000e511.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE511 10692 bytes
SHA-256: 8e6d92d81bd740df8e829256c2bb398e3990c7270139dc1d19629a4011698ec0

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