Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed9e0cb6da5995cb…

MALICIOUS

PDF

220.7 KB Created: 2021-01-20 23:25:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: bea1be7ad87ed10c743be7350977240b SHA-1: 777980246c6c429370d029858efa0af13027d070 SHA-256: ed9e0cb6da5995cbe523fa69d19664cde4e0729e6db3da73d34f006427aaf3c2
162 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It contains a link to a known malicious redirector, which is likely used to serve a second-stage payload. The document body, though heavily obfuscated, contains text related to video game cheats, serving as a lure to encourage users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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
  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://traffmen.ru/123?utm_term=nba+2k11+my+player+cheats+pc In PDF document text
    • https://cdn.sqhk.co/denepepunuja/gejcTtK/precious_definition_synonyms_and_antonyms.pdfIn PDF document text
    • https://cdn.sqhk.co/sabepakofo/Sdihjcb/history_of_south_asia_book.pdfIn PDF document text
    • https://cdn.sqhk.co/mofijovelu/hjlidor/84706061477.pdfIn PDF document text
    • https://cdn.sqhk.co/nilamemiw/IhdHhbt/65959848103.pdfIn PDF document text
    • https://site-1246781.mozfiles.com/files/1246781/destiny_two_black_armory_guide.pdfIn PDF document text
    • https://site-1172650.mozfiles.com/files/1172650/fenikozulug.pdfIn PDF document text
    • https://cdn.sqhk.co/nugutobudan/uVhb4ij/83448256361.pdfIn PDF document text
    • https://site-1168031.mozfiles.com/files/1168031/car_mechanic_simulator_2018_car_list.pdfIn PDF document text
    • https://cdn.sqhk.co/durotula/rijicL7/fatorenisitiselenot.pdfIn PDF document text
    • https://cdn.sqhk.co/gadukupuwe/jhcMiaH/uncrowned_greatest_hero_lyrics_english.pdfIn PDF document text
    • https://site-1247550.mozfiles.com/files/1247550/blablacar_apk_android.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/poresi/pepizojanobigosuporo.pdfIn PDF document text
    • https://s3.amazonaws.com/zubuwujoxom/wound_infection_antibiotic_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/pulujolatepuv/32170318443.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off00032fa4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32FA4 31600 bytes
SHA-256: 1ea96e6fbf71c31e17b532b91e4f4f97710cb6c9e2941c6de5f73fee5a39bd9b
font_00_sfnt_off0002f3b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F3B0 5632 bytes
SHA-256: 1fdade356d3d01ac2fdac5c37f7d1b2ea8b58b0c6ee6aad430bf326a40ac56ae
font_01_sfnt_off000306c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x306C0 12016 bytes
SHA-256: 1dfe38abfe1faff950518a7fe57a33fd1ee1315f6d47ba2180eee471ca9f45a1

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