Malicious PDF — malware analysis report

Static analysis result for SHA-256 077bb2c3969a6240…

MALICIOUS

PDF

69.1 KB Created: 2020-12-20 06:11:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 868b6b85be6d7c4fa30463c2f6f10f43 SHA-1: 1bc868205fb1d147452d67eea6409dfc91315e06 SHA-256: 077bb2c3969a6240cc282251339ae8939fe76d0441873e5178213105826567b5
154 Risk Score

Malware Insights

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

The PDF file contains a link to a suspicious URL, identified as a malicious redirector. The document body, though heavily obfuscated, suggests a lure related to 'Aa/na meetings topics'. The presence of embedded URLs and the ML classifier's high confidence score indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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=aa%252Fna+meetings+topics
    • https://mukaxonalox.weebly.com/uploads/1/3/4/5/134580963/padetexilifun.pdf
    • https://lituveso.weebly.com/uploads/1/3/4/3/134362288/3148613.pdf
    • https://wubabenababi.weebly.com/uploads/1/3/4/4/134432193/paginuzuxa-nerexev-pejaloma-solalel.pdf
    • https://segamovav.weebly.com/uploads/1/3/4/8/134892249/365421245a33f.pdf
    • https://rujupiben.weebly.com/uploads/1/3/4/8/134852491/73283f9b7.pdf
    • https://xazapadikud.weebly.com/uploads/1/3/1/8/131871762/nugifavaseminilise.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://static1.squarespace.com/static/5fc5720fc6229360eccb86af/t/5fcba9529708706f39a052c7/1607182674981/truck_driving_truck_simulator_racing_games_download.pdf
    • https://static1.squarespace.com/static/5fc79caa48c1673e559ddea1/t/5fd6f7389264095525e94831/1607923513223/functions_of_sympathetic_nervous_system.pdf
    • https://static1.squarespace.com/static/5fc553139698b02c7f3e0be9/t/5fc7a93548d5672cfb466c8e/1606920501050/extreme_driving_simulator_hack_version.pdf
    • https://static1.squarespace.com/static/5fdec0a62dcd53187f2068e5/t/5fdecec07514fb3b764f5a7a/1608437441440/56496160641.pdf
    • https://static1.squarespace.com/static/5fdcbb9339856919c2930471/t/5fdd0e1a063db063aac93266/1608322587473/84906321016.pdf
    • https://static1.squarespace.com/static/5fcef5a494f25741fd4a8c5e/t/5fd6ef5e3ebe04163174651f/1607921504670/best_android_smartwatch_with_blood_pressure_monitor.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c809.bin
061968c55f78e63178f35108a81eca605a35acdfa24ee92d4def28483a718bdc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC809 4936 bytes
font_01_sfnt_off0000d8c6.bin
c0b66c38bfbbd872dc3de10c52525a21e4da5ffb0d4b1b09fa18230fe61ba885		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD8C6 9744 bytes
font_02_sfnt_off0000f9e5.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF9E5 4324 bytes

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