Malicious PDF — malware analysis report

Static analysis result for SHA-256 e18c6de5fd398035…

MALICIOUS

PDF

73.1 KB Created: 2021-01-08 15:30:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 3d23871bc2ab0d59efdcdf8990c9e79d SHA-1: 03f1b82017602db982b21d1bdf10ac4f1aa18d95 SHA-256: e18c6de5fd398035bdec1e43ac9d16daf827e35fe5b91752012971bdd2b6d1b2
96 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. An external URI pointing to 'trafficel.ru' was extracted, suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains text that appears to be a lure related to a song title.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://trafficel.ru/aws?utm_term=chocolaty+chunnu+song PDF link annotation
    • https://saxoxukodumixab.weebly.com/uploads/1/3/4/6/134635675/taburer_nutepurubiw_kifagififik.pdfIn PDF document text
    • https://cdn.sqhk.co/kulizuxekume/giH4jfc/banazapevivo.pdfIn PDF document text
    • https://cdn.sqhk.co/lafuwexale/jgKhb1a/17887615111.pdfIn PDF document text
    • https://lonerunit.weebly.com/uploads/1/3/4/0/134017922/xofasum-tuleradujo-masodutegu-xosafosopavat.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/678e32cc-2a0a-4875-a1ed-069ecc0aea82/13605964209.pdfIn PDF document text
    • https://s3.amazonaws.com/bivanud/2018_corporate_responsibility_report_ibm.pdfIn PDF document text
    • https://s3.amazonaws.com/vavabi/autumn_foliage_japan_2018_report.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dbcb82e9-6d64-431a-b713-6c45e511ec0f/whispering_death_dragon_coloring_pages.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da02bf1a-0357-4a4d-8671-755bccebdb5a/ninja_foodi_blender_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1302c75c-dea8-4399-878b-64fcf1126bc7/five_nights_at_freddys_trophy_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ec5a130-792d-4bd9-825e-40042bb7c58f/zuma_full_game_free_download_for_pc.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_off0000cb68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB68 4972 bytes
SHA-256: cac95403fcb78a1bbcffec499ffb69ed23b9b45046c98aebed268b76aaab7e20
font_01_sfnt_off0000dc57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC57 11156 bytes
SHA-256: a59d94e7f5c3b0f9134f4b74da47de3a5d89917eec108be83b18684dc0942d77
font_02_sfnt_off0001021e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1021E 16312 bytes
SHA-256: 028dbaa76d48ae99b02248bacea50134e27ed131f5dd39e25ac401de8961e19b

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