Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a618524dc275306…

MALICIOUS

PDF

75.0 KB Created: 2021-02-28 10:32:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1a248e116d37547caedc36c648b3a68c SHA-1: 8550bf5f4cd77bbd4fd2d49a469f1495827ab28f SHA-256: 0a618524dc27530632ba91be8b2e79999f103cc3e37a9a75216fa8d0b03713c6
126 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, with one particularly suspicious URL pointing to a domain known for hosting malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. The document body, though heavily obfuscated, appears to contain keywords related to product information, suggesting a lure to a malicious website.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9210

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
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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://leonvi.ru/award?keyword=true+freezer+t-49f+door+gasket
    • https://cdn-cms.f-static.net/uploads/4489844/normal_601a1ee5eef60.pdf
    • http://larebalin.mypressonline.com/is_tcl_better_than_insignia.pdf
    • https://bokowamimufap.weebly.com/uploads/1/3/2/7/132712050/fexafusanoje.pdf
    • http://kirakexig.mypressonline.com/cuantos_decimetros_cuadrados_hay_en_un_kilometro_cuadrado.pdf
    • https://mapivabivex.weebly.com/uploads/1/3/0/7/130776319/gisezopunib_junusibelijopu_goduramad.pdf
    • http://prizinsta.info/jenofififuzegaworuxuwei2ugc.pdf
    • https://cdn-cms.f-static.net/uploads/4424029/normal_600b050eba00e.pdf
    • https://rubosesizip.weebly.com/uploads/1/3/4/7/134744628/624606b713f.pdf
    • https://cdn-cms.f-static.net/uploads/4471455/normal_601675c85f7f1.pdf
    • http://streichpack.online/cracking_the_code_book_ayushmannyoi2i.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://gazisuwak.rf.gd/android_apps_on_windows_10_mobile.pdf
    • https://s3.amazonaws.com/bezorito/av_malformation_brain.pdf
    • https://s3.amazonaws.com/zagubip/grade_2_english_worksheets_term_3.pdf
    • http://fuvarijes.atwebpages.com/32078148185.pdf
    • http://tojosigoxoxeje.rf.gd/5234161712.pdf
    • https://s3.amazonaws.com/bejikefowu/39704957222.pdf
    • https://s3.amazonaws.com/xepululejiwof/boolean_algebra_simplification_questions_and_answers.pdf
    • https://s3.amazonaws.com/bejexe/ptv_sports_live_tv_app_for_android.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e4dc.bin
5e5a824503dcbb7a92b1db263b813fb9ea8f31707650fe37eb5a01f84b427244		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE4DC 5112 bytes
font_01_sfnt_off0000f668.bin
0cd5644d9c57e4b9d6824e4dc01c09a9a3e6682f2f6899facf6b7c86a225c556		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF668 10864 bytes
font_02_sfnt_off00011b6f.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11B6F 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.