Malicious PDF — malware analysis report

Static analysis result for SHA-256 d25bdc2ce24f4394…

MALICIOUS

PDF

87.1 KB Created: 2021-02-13 01:31:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: b902bf8a72badcd620351031f0760e59 SHA-1: 91fa9afcffc77ec9e26cf59f74811d98a90a63cf SHA-256: d25bdc2ce24f439484720b8908dca025ef1cd724079f12df0e1b24d977b0a8d3
126 Risk Score

Malware Insights

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

This PDF document was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The document contains numerous embedded URLs, many pointing to disposable domains and link farms, suggesting a phishing or malware distribution scheme. The presence of external URIs and the overall structure strongly suggest the document is designed to redirect users to malicious sites for further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://seumenha.ru/wix?keyword=year+7+physics+forces+worksheets PDF link annotation
    • http://lepegumokolato.iblogger.org/credit_reporting_agencies_scams.pdfIn PDF document text
    • https://cdn.sqhk.co/tatonabufule/igYwha7/fuzapim.pdfIn PDF document text
    • http://fresh-ita.fun/virtual_table_tennis_hackjl0am.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502567/normal_6013a9dde4c7e.pdfIn PDF document text
    • https://vupudirul.weebly.com/uploads/1/3/0/8/130874586/6708504.pdfIn PDF document text
    • http://dakujuzoma.22web.org/96528602980.pdfIn PDF document text
    • https://cdn.sqhk.co/sodelaranu/NYhaiep/american_red_cross_emergency_first_aid_kit.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393034/normal_5fd7d24cb141c.pdfIn PDF document text
    • https://tesitibu.weebly.com/uploads/1/3/4/7/134712385/raromibepip_pivipo_ranusavikabuseb_bejorovu.pdfIn PDF document text
    • http://tulakijumipad.22web.org/account_manager_cv_template_word.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gigolovumiguse.rf.gd/58564423691.pdfIn PDF document text
    • http://bobupugarini.epizy.com/sagutuwigefawexalififa.pdfIn PDF document text
    • http://zorenepovapaj.epizy.com/39574907820.pdfIn PDF document text
    • http://xezedif.epizy.com/hdb_bdr_full_form.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn 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

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dd15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD15 3120 bytes
SHA-256: 1bd960eff99b849c0e38eb95c69e701b9dd18e0759aa7c4e7ada044d6af00622
font_01_sfnt_off0000e835.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE835 5368 bytes
SHA-256: f6c88892c1780a9838dadc0abd2c2389386f988971787e3299672d9bf67b2052
font_02_sfnt_off0000fa9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA9C 13100 bytes
SHA-256: a9166711b70c8a0834d60907714088771e82652290be6b1a467be6b5100caaa2
font_03_sfnt_off0001260b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1260B 17116 bytes
SHA-256: eca78a54d637ca94bf037e4f96e8268461919da1fe64b907d36c5b74494ffc61
font_04_sfnt_off00013ef4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13EF4 6296 bytes
SHA-256: 6b2d5219890e8339a986a368a37aa1c2f5f7b3988ecec9aa4957e058612540fb

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