Malicious PDF — malware analysis report

Static analysis result for SHA-256 1dd29f764e23ec0c…

MALICIOUS

PDF

79.9 KB Created: 2021-02-13 12:44:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 4c510937051b32a582c44ea39021d319 SHA-1: 06e0ddff076e765a4d9485d7790b442748252a25 SHA-256: 1dd29f764e23ec0cc42be801dbd0d05a203336119653405268d1e7b14ebe3169
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable domains, suggesting a link farm designed to host malicious content or phishing pages. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with techniques used to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://maypoin.ru/wb?keyword=cellulitis%20treatment%20guidelines PDF link annotation
    • https://wivujugojuz.weebly.com/uploads/1/3/4/8/134883460/7925983.pdfIn PDF document text
    • http://fijixedi.22web.org/multiplying_and_dividing_scientific_notation_worksheet.pdfIn PDF document text
    • http://neo-tp.ru/unsecured_notes_payable_on_balance_sheet7gu5p.pdfIn PDF document text
    • http://lestyprin.online/38619854931nf1xi.pdfIn PDF document text
    • http://copyright-security-ig.com/amish_tripathi_sita_warrior_of_mithila_free_download3h6cm.pdfIn PDF document text
    • https://nexudusuje.weebly.com/uploads/1/3/0/7/130740550/4861764.pdfIn PDF document text
    • http://goledipe.22web.org/61210936780.pdfIn PDF document text
    • https://xoxigukot.weebly.com/uploads/1/3/4/8/134861038/genavaxuveratufuk.pdfIn PDF document text
    • https://tupokigefadewun.weebly.com/uploads/1/3/4/7/134702618/304a0d.pdfIn PDF document text
    • http://idealicaitalia.website/craftmaster_sleeper_sofa_reviews66e6r.pdfIn PDF document text
    • http://d2-club.ru/acid_forming_vegetables_and_fruitsq220u.pdfIn PDF document text
    • https://vejazisiji.weebly.com/uploads/1/3/0/9/130969480/pixanapukuwezegulet.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/lezerawe/pevir.pdfIn PDF document text
    • http://vefugiw.epizy.com/civics_and_economics_sol_study_packet_answers.pdfIn PDF document text
    • http://wisunomimat.epizy.com/jamedasapagulawuzokuzam.pdfIn PDF document text
    • https://s3.amazonaws.com/winumigutam/fiat_500x_2019_manual.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_off0000fcca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCCA 5052 bytes
SHA-256: 921c906fce3733d68b44b2aef24adbb42b8da2fc456c3d64ce4d48088f796dbe
font_01_sfnt_off00010dd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DD8 11296 bytes
SHA-256: c3185b4471f772ba0ddccfda59d273d2760db38ff1657261caeed413510fdc2e

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