Malicious PDF — malware analysis report

Static analysis result for SHA-256 00110c36a8909623…

MALICIOUS

PDF

73.9 KB Created: 2020-12-18 04:42:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: a4560b0f0fd9374beb76ca1bb1f3e2d9 SHA-1: 90b3c8594d9fe0423093a919aa6142d69d010eea SHA-256: 00110c36a8909623e17db411ec2a66d760899dedd4f4a37e99e335cfb7a74330
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous external URIs, many hosted on disposable domains, suggesting a link farm or redirection mechanism. The presence of 'stick war legacy hacked pc' in the document body and associated URLs indicates a lure to attract users, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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
  • 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/123?utm_term=stick+war+legacy+hacked+pc PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4372967/normal_5fd30ee11eaf6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381528/normal_5fcdc12d51106.pdfIn PDF document text
    • https://riwozetamozu.weebly.com/uploads/1/3/4/3/134331456/3592500.pdfIn PDF document text
    • https://tuzutetenufiro.weebly.com/uploads/1/3/4/7/134716615/228f84.pdfIn PDF document text
    • https://bexulijariva.weebly.com/uploads/1/3/4/8/134885506/sopopebilaga-kosajizumov.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419847/normal_5fad3db9d0a14.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369651/normal_5f982b5341dab.pdfIn PDF document text
    • https://vonubaxuted.weebly.com/uploads/1/3/1/4/131452839/posazagas.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://s3.amazonaws.com/boxujetanonikuv/manager_meeting_notes_template.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0ed17f7cf8c75402b0ccf/t/5fc124d0f3de5e49b58d4ae2/1606493393002/new_practical_chinese_reader_3_workbook_audio_answers.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fce60e2888ad70830bd96ec/t/5fd0efd025639d09fd2c0b87/1607528402699/download_super_jump_soccer_mod.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fcdeda6dded0f7041aa80ea/t/5fd0137064d5ea3c9922ca89/1607471984455/lemonade_diet_recipe_for_one_day.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://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d1f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1F1 5516 bytes
SHA-256: 33ba4f72bcb4e32a5d06613aef81c76b82254276705292a7a9f8804702477468
font_01_sfnt_off0000e4c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4C4 5960 bytes
SHA-256: 2c0b7a8eec3168e6865ad32f1b5b987a3bf9d342c581b0f556a0d6d081cef69e
font_02_sfnt_off0000f40f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF40F 12108 bytes
SHA-256: 0a565151b9d0bed8e2172757c89cb4eff74d1b427c35cfc145e01413bf877259

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