Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ea27d8c6fcd6a6e…

MALICIOUS

PDF

76.6 KB Created: 2021-03-27 20:08:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: e11289d9192ceb51c08954b372b1ab60 SHA-1: b0fc5738449856c9e89260b306dbf9dc4927f2c4 SHA-256: 2ea27d8c6fcd6a6e2acf5dbf3ad6d38bda6ea04bea0971aea2e75399449f6597
126 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojanized PDF. It contains embedded URLs that point to disposable hosting and potentially malicious domains, suggesting an attempt to redirect users to a compromised site. The document body, though heavily obfuscated, appears to be a lure related to 'cellular energy review worksheet'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://jumiwimov.ru/wix?keyword=cellular+energy+review+worksheet PDF link annotation
    • http://zugapuvu.mywebcommunity.org/93250149255.pdfIn PDF document text
    • http://kunozoxutokusu.mygamesonline.org/drying_shrinkage_of_concrete.pdfIn PDF document text
    • http://magatapomuv.22web.org/13519145387.pdfIn PDF document text
    • http://foyou.store/cuanto_es_1_3_pulgadas_en_mm7f30o.pdfIn PDF document text
    • http://f1l3download.site/arduino_uno_r3_mounting_holeskobyh.pdfIn PDF document text
    • http://icub.tech/74885516820nv11o.pdfIn PDF document text
    • http://jeruxawi.iblogger.org/luxoxavawogudugel.pdfIn PDF document text
    • http://pigalimiru.medianewsonline.com/experience_certificate_of_teacher.pdfIn PDF document text
    • http://tonedomopoja.scienceontheweb.net/5668499497.pdfIn PDF document text
    • http://vipimuxatomefi.medianewsonline.com/durable_medical_equipment_list.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jagupawef.rf.gd/signs_a_man_is_interested_in_you_romantically.pdfIn PDF document text
    • http://milebulijulami.onlinewebshop.net/jetupufovukorajunexigel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4151b5f8-25bb-4513-a138-76991440a533/653411764.pdfIn PDF document text
    • http://nokejufesuw.atwebpages.com/aumentaty_author.pdfIn PDF document text
    • https://s3.amazonaws.com/pazerogasarinu/blank_certificate_of_recognition_templates.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/202ba5c5-345e-4f95-a8af-62550187d6d0/14288280490.pdfIn PDF document text
    • https://s3.amazonaws.com/panalipolifod/napalojijajudikipa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2de18373-5df4-48c1-9e44-05dbd43cab6d/spring_framework_maven_example.pdfIn PDF document text
    • https://s3.amazonaws.com/lixisariwulo/zuredulilusukokibaju.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf89a96f-deb0-4188-a355-840de8501f5d/64436211608.pdfIn PDF document text
    • http://xaxeziru.epizy.com/lufatemekevew.pdfIn PDF document text
    • http://gagugitebuf.atwebpages.com/tifujago.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eed7a19d-8bd3-410e-bb9c-7c4e6dd13f63/lesaberupixugeg.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_off0000ee1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE1D 5168 bytes
SHA-256: e3b461065a2c06ebb7d71a550d3a11a92820545e27c153d6351bb6381cff4690
font_01_sfnt_off0000ffc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFC6 10912 bytes
SHA-256: c29c1739ce3ba8b49bc433ca4b836bfb645ab63f0614db5e02ac10dd228b585b

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