Malicious PDF — malware analysis report

Static analysis result for SHA-256 baedd743e7a48f32…

MALICIOUS

PDF

69.6 KB Created: 2021-02-27 20:47:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: a1b209aa13a4d47822e4938eb72afa2f SHA-1: 11d4e0f13b6984b435245d5d751158889ac6efb7 SHA-256: baedd743e7a48f321b4c030f007ee4d5f688af04a15f8e9a46a474bbd2ec71d0
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs pointing to disposable domains, indicative of a link farm designed to host malicious content or redirect users to phishing sites. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' strongly suggests this is a malicious lure. While no scripts were explicitly extracted, the presence of many external URIs and the ML classifier's high confidence score point towards a phishing or malware distribution attempt.

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://seumenha.ru/123?utm_term=mecanica+vectorial+para+ingenieros+estatica+11+edicion+pdf+gratis PDF link annotation
    • http://vomimaforotagi.mywebcommunity.org/cuisinart_griddler_deluxe_steak.pdfIn PDF document text
    • http://sun-italy.space/character_reference_letter_for_coworker_template0iol9.pdfIn PDF document text
    • http://zuluwana.iblogger.org/lagilig.pdfIn PDF document text
    • http://zafimapi.22web.org/anaconda_for_windows_7_free.pdfIn PDF document text
    • http://czecheducation.space/raspberry_pi_viewercv52f.pdfIn PDF document text
    • http://select-get.top/delete_android_bloatware_without_rootingwt0tv.pdfIn PDF document text
    • http://idealica-italiauficiale.website/finding_perimeter_worksheets_3rd_grade3jhw6.pdfIn PDF document text
    • http://banque-populaire.best/88717703944e4ygw.pdfIn PDF document text
    • http://extraterrestrials.space/78544820923jk091.pdfIn PDF document text
    • http://usecabinets.xyz/417492990817ttjo.pdfIn PDF document text
    • http://stylecurtains.com/rexirovorobibowaysa6b.pdfIn PDF document text
    • http://euromarket.pro/make_letter_tracing_worksheetsncera.pdfIn PDF document text
    • http://podarokinsta.site/149011627097lf2h.pdfIn PDF document text
    • http://rasezatoxefu.mygamesonline.org/pride_and_prejudice_2005.pdfIn PDF document text
    • http://visatog.22web.org/invoice_paid_template.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zakuvusebaj.epizy.com/bittorrent_search_engine.pdfIn PDF document text
    • http://pojozija.onlinewebshop.net/do_all_states_have_a_progressive_state_tax.pdfIn PDF document text
    • http://gasigigi.rf.gd/report_card_comments_for_grade_2.pdfIn PDF document text
    • http://malinaliwul.epizy.com/sasidogetezewaxisufe.pdfIn PDF document text
    • http://jolenifetonami.epizy.com/windows_10_updates_automatically.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_off0000d116.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD116 5440 bytes
SHA-256: cdf4ba306da912f9bf1e0bd54dbe8fcd20d737e01d65c2e1eb9bce7ff41be8dc
font_01_sfnt_off0000e3c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3C2 11156 bytes
SHA-256: 13db732acfc057f3a71cf98d282d2cee08b20e3c8749bb574832b067346c98d5

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