Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f5fb6556b216ba6…

MALICIOUS

PDF

74.8 KB Created: 2021-03-27 17:12:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: dc6d5f57ee14c071d49b89937068ef62 SHA-1: 5b6c79f13d620d629bc61c2a521338263db0bf6e SHA-256: 3f5fb6556b216ba6dfebb9e61940eb0b1f77ee3438c571309e3d6c57f52d2fbc
126 Risk Score

Malware Insights

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

The PDF file is classified as malicious by ML and ClamAV, and contains numerous embedded URLs. Several of these URLs point to disposable hosting domains, suggesting a link farm or phishing attempt. The document body, though heavily obfuscated, appears to be a lure related to driving tips, which is likely a pretext to direct users to malicious sites.

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://ponafet.ru/wix?keyword=tips+for+driving+manual+car PDF link annotation
    • http://felagem.getenjoyment.net/fugixaxemavaromediba.pdfIn PDF document text
    • http://sewukagazub.mypressonline.com/gubabuzut.pdfIn PDF document text
    • http://gezoxapawelu.22web.org/psychology_books_by_nagarajan_in_tamil.pdfIn PDF document text
    • http://sifaritube.sportsontheweb.net/fusionner_2_mac_sierra.pdfIn PDF document text
    • http://suzofovolavuk.scienceontheweb.net/rotifogizapijuwikabasejo.pdfIn PDF document text
    • http://dugarudewemudo.sportsontheweb.net/bagada.pdfIn PDF document text
    • http://sipipewawezizuf.getenjoyment.net/application_octet_stream_firefox.pdfIn PDF document text
    • http://rofuxipof.mywebcommunity.org/how_much_does_a_sephora_operations_consultant_make.pdfIn PDF document text
    • http://jarowulizose.sportsontheweb.net/cardiovascular_disease_symptoms.pdfIn PDF document text
    • http://tozemudezajif.mygamesonline.org/logaj.pdfIn PDF document text
    • http://jaralet.getenjoyment.net/59331302621.pdfIn PDF document text
    • http://natewisuwosat.iblogger.org/basic_english_grammar_book_4_free_download.pdfIn PDF document text
    • http://jabofedu.sportsontheweb.net/builders_brochure_design.pdfIn PDF document text
    • http://jerimujolegem.medianewsonline.com/dungeons_and_dragons_fillable_character_sheet.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pudosuvosav.atwebpages.com/learn_python_the_hard_way_python_3_zed_shaw.pdfIn PDF document text
    • https://s3.amazonaws.com/zoromexemuzid/53130233793.pdfIn PDF document text
    • http://jubalagifagusop.epizy.com/firefox_for_macbook_pro_free.pdfIn PDF document text
    • https://s3.amazonaws.com/lemefofutomapox/gokezawedizinapa.pdfIn PDF document text
    • http://nokatebikexu.epizy.com/88506813056.pdfIn PDF document text
    • http://jabodegodonirad.atwebpages.com/13046712946.pdfIn PDF document text
    • http://wovibojo.onlinewebshop.net/75372274888.pdfIn PDF document text
    • https://s3.amazonaws.com/minegikukovel/tepojavimi.pdfIn PDF document text
    • http://penanaras.myartsonline.com/gunakakaxonijozozefel.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_off0000e683.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE683 5484 bytes
SHA-256: 73e433ed9696da8a53715c825fec45f91b7ae3948262e095af3679b359814dcb
font_01_sfnt_off0000f919.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF919 10748 bytes
SHA-256: 76cbb3a0cf00f851ad2bbd1cbc198facd29a85d442d6049ad4a92be129449b20

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