Malicious PDF — malware analysis report

Static analysis result for SHA-256 26d9c81fe2c9fd08…

MALICIOUS

PDF

102.5 KB Created: 2021-02-20 23:44:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: b16d411daa98702061e0647cca35fdbc SHA-1: 7a555e5a06e155b86c3b17bef9b803aa88a60904 SHA-256: 26d9c81fe2c9fd0810b5e9167918417088107f512e58d409d6bd875d7f1fb2ce
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It contains numerous embedded URLs pointing to disposable hosting, suggesting a phishing or malware distribution campaign. The presence of external URIs and link farm characteristics indicates an attempt to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://jottigo.ru/123?utm_term=enron+scandal+case+study+in+hindi PDF link annotation
    • https://jarofipe.weebly.com/uploads/1/3/1/4/131408229/1e370b.pdfIn PDF document text
    • http://idealica-italiauficiale.website/super_soccer_champs_2019_apk_android_oyun_clubwfdoq.pdfIn PDF document text
    • https://puwibovur.weebly.com/uploads/1/3/4/6/134639487/31934747b51b.pdfIn PDF document text
    • http://poradoit1.site/jodozqgo24.pdfIn PDF document text
    • http://1-bog.ru/zurabereximepuxudumelipavfw7ea.pdfIn PDF document text
    • https://cdn.sqhk.co/wixakulu/ifUges7/62809725649.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371003/normal_6014d298a93ed.pdfIn PDF document text
    • https://dixoparogazasa.weebly.com/uploads/1/3/1/8/131871726/bojus.pdfIn PDF document text
    • https://cdn.sqhk.co/delobepaziw/dMicdlA/zevogijuwixotogi.pdfIn PDF document text
    • https://cdn.sqhk.co/tunaluvum/vgfGt6W/a_countervailing_theory.pdfIn PDF document text
    • http://thelandofbadideas.com/34265042921ok4w1.pdfIn PDF document text
    • https://paleforekirito.weebly.com/uploads/1/3/4/5/134579508/ratunimefafejib-jokilolukemowos-jitidifenibumol-xikew.pdfIn PDF document text
    • http://maddot.space/the_dialectical_behavior_therapy_skills_workbook_by_matthew_mckaygy6tu.pdfIn PDF document text
    • https://nisivijuwowog.weebly.com/uploads/1/3/0/8/130813757/6685558.pdfIn PDF document text
    • https://fitarerak.weebly.com/uploads/1/3/5/3/135313257/vujefala.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/lusabifef/business_model_filetype.pdfIn PDF document text
    • https://s3.amazonaws.com/julaxel/william_shakespeare_sonnet_18_translation.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00014437.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14437 4968 bytes
SHA-256: 83142694c4476a4b0e2092d36cc6cc8c42df11c802af0d8c84ecc1dbc4313c50
font_01_sfnt_off0001550e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1550E 12300 bytes
SHA-256: 4342e01001ef76c7f7bb9dfd47d8c6a7ec31ee055de536ccd5f3f8c67d66d07d
font_02_sfnt_off00017e72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17E72 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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