Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c0addcc5d68f4dc…

MALICIOUS

PDF

73.1 KB Created: 2021-06-08 18:22:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 751279d0f13942957ccb545158b57162 SHA-1: 69892542cc5257eec14fa565744d34200f2e75fb SHA-256: 2c0addcc5d68f4dcb7984168bfe9f5edec0b8735d7ed74c1c2b382b79d8a321f
126 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it is a link farm on disposable hosting, with a high ML score and ClamAV detection as a phishing trojan. The embedded URL leads to a domain associated with phishing, and the document body, though heavily obfuscated, contains text related to online admission forms, suggesting a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://smidgel.ru/pbw?utm_term=cap+form+online+admission+in+1st+year+karachi+seccap+2019+20 PDF link annotation
    • https://kukezuleji.weebly.com/uploads/1/3/4/3/134361302/74fb6.pdfIn PDF document text
    • https://pukapukipek.weebly.com/uploads/1/3/4/6/134636258/449085.pdfIn PDF document text
    • https://waluxine.weebly.com/uploads/1/3/4/7/134759732/wibip_pugojutu_gulijovute.pdfIn PDF document text
    • https://faworufobideped.weebly.com/uploads/1/3/2/6/132682851/7519454.pdfIn PDF document text
    • https://sisaseno.weebly.com/uploads/1/3/0/7/130776680/2124620.pdfIn PDF document text
    • https://zidoboxeped.weebly.com/uploads/1/3/5/3/135324118/piburoxiger_panut_wudofod_xubedodajan.pdfIn PDF document text
    • https://jukejifoka.weebly.com/uploads/1/3/5/3/135311866/tinurijoxuji-kasedisebiw-kulanetukuluzu-nuxos.pdfIn PDF document text
    • https://xodalolekuxol.weebly.com/uploads/1/3/4/1/134108590/gupiloxonu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372682/normal_600cc4729a1ff.pdfIn PDF document text
    • https://gulekizusivo.weebly.com/uploads/1/3/5/3/135392766/9eb75d6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413850/normal_601457fcad9eb.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/c2ca4926-b7a2-44ca-af82-2c0be660f1c6/how_much_does_it_cost_to_have_a_pool_heater_installed.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/604834e2-0dde-45b4-be5e-bfb7266286cc/95437977146.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/76655ee0-0562-4f11-ab2c-bc53a40c6161/how_to_calculate_variance_from_probability_distribution_table.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f92579f-5cbb-45f7-b453-af19d75ef7fd/24550957029.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af1e71d6-62ab-4632-89f3-738418f14198/fobikexividonimu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/76b1a38a-3fe3-4a06-a583-b66f871686d3/who_moved_my_cheese_book_club_discussion_questions.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000defe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEFE 5948 bytes
SHA-256: 1d08f88ba9442b5a09916d8177a25355559c46709b16c6fcd92916b264bf9348
font_01_sfnt_off0000f324.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF324 10420 bytes
SHA-256: 8897beb004e1afa5458aa42e54fe2c9291f76485d531ed27915e237f0faf0dd2

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