Malicious PDF — malware analysis report

Static analysis result for SHA-256 014aee755170be3d…

MALICIOUS

PDF

84.8 KB Created: 2021-05-02 12:45:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: cfe00173a67079eba84bff24cd90bb7b SHA-1: 858827c119c5a62fb3e3586cd7f9d5f9d4fb5bd4 SHA-256: 014aee755170be3df0163b29bb056ce7ba22e35f5b1d94721f5cf7b0ff00e707
66 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 4

  • 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://dugedepap.ru/strik?utm_term=how+to+write+3+tenths+as+a+decimal PDF link annotation
    • http://wozovumorawoka.sportsontheweb.net/tilufepavaxusexebuzukizo.pdfIn PDF document text
    • http://vegofejolafud.mygamesonline.org/65516249922.pdfIn PDF document text
    • http://gefokugok.getenjoyment.net/99667102877.pdfIn PDF document text
    • http://juvizex.sportsontheweb.net/pugejafetifafepevugebuzov.pdfIn PDF document text
    • http://wozupabalaviv.medianewsonline.com/83754887577.pdfIn PDF document text
    • http://fegimikerekela.22web.org/geographical_information_system_notes.pdfIn PDF document text
    • http://gejudoxe.mypressonline.com/36962159088.pdfIn PDF document text
    • http://levinorutuw.iblogger.org/58970005054.pdfIn PDF document text
    • http://dixajadabaw.66ghz.com/chapati_images_free.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mewabetowa.myartsonline.com/idsa_febrile_neutropenia_guidelines.pdfIn PDF document text
    • http://widafasamuj.epizy.com/abraham_darby_sixth_form_uniform.pdfIn PDF document text
    • http://vovajixavago.epizy.com/genetics_crossword_puzzle_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/gomaxod/vaganop.pdfIn PDF document text
    • http://padegijogul.atwebpages.com/8794363665.pdfIn PDF document text
    • https://21e323bd-7fdd-46e9-a6c7-4880e76d7610.filesusr.com/ugd/0a51c1_3db64bd8efd64373a25f8999de1bf5db.pdf?index=trueIn PDF document text
    • https://436240a4-ef10-404e-ad90-c5cab949c7af.filesusr.com/ugd/3fb742_ce45fe6fb1c74626bcb2c9c53dcc4c37.pdf?index=trueIn PDF document text
    • http://xoxewunifas.epizy.com/sosil.pdfIn PDF document text
    • http://pagitewuzowika.epizy.com/technological_innovation_resource_allocation_and_growth.pdfIn PDF document text
    • http://tefokubekaxo.rf.gd/gosai_baganer_bhoot_free_download.pdfIn PDF document text
    • https://f9c81679-ddb1-4746-ab40-32673edc426c.filesusr.com/ugd/2eff39_1156062233714d0884f85f4f11724ba3.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/nopomewegobij/best_whatsapp_status_in_tamil_video.pdfIn PDF document text
    • http://sefibonep.rf.gd/53050074227.pdfIn PDF document text
    • http://povokufav.epizy.com/what_size_file_for_.325_stihl_chain.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_off00010ebf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EBF 5396 bytes
SHA-256: b1c482f53bdbefaf5444d7a3352771dcf7af9a9104719ece5c54310006a2eae8
font_01_sfnt_off000120f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x120F5 10756 bytes
SHA-256: 20e8fdc49970c382b56d073ef95f4f7e7f3849a3e70ecffe2b9c93096866b514