Malicious PDF — malware analysis report

Static analysis result for SHA-256 e15300ce14b4eb80…

MALICIOUS

PDF

79.9 KB Created: 2021-01-12 03:20:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 83977c73332aa4fdf74ae2c73c43b341 SHA-1: 502e7c82285b7bcbc4b88cfe605532f94a1d1461 SHA-256: e15300ce14b4eb8019dc7a1917c25bac9d55f095946edd5f03abb777053b66b7
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure, specifically pointing to 'ggtraff.ru'. ClamAV also detected the file as 'Pdf.Phishing.Trojan'. The embedded URL is likely used to lure the user to a malicious site, potentially for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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.
  • 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://ggtraff.ru/123?utm_term=ese+conjunto+primavera+descargar In PDF document text
    • https://cdn.sqhk.co/miwataxanis/gfy3had/dragon_bubble_shooter_aarp.pdfIn PDF document text
    • https://cdn.sqhk.co/zatejurix/xhhggig/la_sportiva_climbing_trail_running.pdfIn PDF document text
    • https://site-1176393.mozfiles.com/files/1176393/sling_tv_reviews_and_complaints.pdfIn PDF document text
    • https://site-1178403.mozfiles.com/files/1178403/waterbury_teachers_credit_union_mortgage_rates.pdfIn PDF document text
    • https://cdn.sqhk.co/xavonepez/Ngcgdjc/20423805247.pdfIn PDF document text
    • https://cdn.sqhk.co/pigujoxexate/j9ihhdF/45323361629.pdfIn PDF document text
    • https://site-1172092.mozfiles.com/files/1172092/highwayman_meaning_synonym.pdfIn PDF document text
    • https://site-1239195.mozfiles.com/files/1239195/65725863884.pdfIn PDF document text
    • https://cdn.sqhk.co/pejemomet/hbH4hfx/76313507817.pdfIn PDF document text
    • https://cdn.sqhk.co/kabevapixox/YjbqQie/concise_physics_class_9_icse_solutions_chapter_1.pdfIn PDF document text
    • https://site-1195301.mozfiles.com/files/1195301/vaiana_an_innocent_warrior_lyrics.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/xidazeze/bitetifuze.pdfIn PDF document text
    • https://s3.amazonaws.com/nedijowewoded/mcgraw_hill_my_math_volume_2_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/somamere/vedic_maths_calculus.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d05e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD05E 6440 bytes
SHA-256: 629123bfde0685c5f69bbdd27ec008bde0224d5c30af1dabb990f6ee33ea778e
font_01_sfnt_off0000e052.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE052 5456 bytes
SHA-256: 9391b6597a51759f72c47f64e5b89d012397dfe53b2faf277f0c8f032961b575
font_02_sfnt_off0000f2dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2DC 11928 bytes
SHA-256: 86ff1ff222cb7fff68751bb90e284e448a96199af0926060994d634179f821d3
font_03_sfnt_off000119a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119A5 16944 bytes
SHA-256: 1c05e66bbf021e78ddfe64928db4f422e66058c2adcfffa48cf339176ef0c7c4

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