Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a5561bb22aac61a…

MALICIOUS

PDF

74.3 KB Created: 2021-06-03 14:30:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: fc2a67ab13bd710aadd5e68f62b4f831 SHA-1: 9b9a1c18b3ee542fd75043b0435a7fa915fa64a0 SHA-256: 2a5561bb22aac61a92e58d55860b91ebd1dfd6c47d63ba3ea4fa5d7ede4f0f60
186 Risk Score

Malware Insights

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

This PDF file is classified as malicious and contains a large number of external links, many pointing to disposable hosting services, suggesting a link farm designed to redirect users. The primary external URI, 'https://garglob.ru/pbw?utm_term=book+of+sith+secrets+from+the+darkside+pdf', indicates a lure related to a book title, likely intended to trick users into visiting potentially harmful sites. No scripts were extracted, but the extensive link farm and ML classification strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://garglob.ru/pbw?utm_term=book+of+sith+secrets+from+the+darkside+pdf PDF link annotation
    • https://bavalezamo.weebly.com/uploads/1/3/4/7/134749705/pumida_gewumosuli_vezeratixetabe_resugolexil.pdfIn PDF document text
    • https://xijutenidipes.weebly.com/uploads/1/3/0/7/130775364/pebosa.pdfIn PDF document text
    • https://buvurowu.weebly.com/uploads/1/3/4/6/134638295/449ee69d8972fcb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416490/normal_5fce6c44f0501.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448713/normal_605c0e54c31b9.pdfIn PDF document text
    • https://bajepexalotatif.weebly.com/uploads/1/3/4/8/134851886/4454b61e.pdfIn PDF document text
    • https://sobapeseg.weebly.com/uploads/1/3/1/0/131070394/6a5fea718.pdfIn PDF document text
    • https://muxupodijem.weebly.com/uploads/1/3/4/8/134885552/mixogusozilawe_dewawavureb_tuduf_feratosogivife.pdfIn PDF document text
    • https://biwimukapol.weebly.com/uploads/1/3/1/3/131398517/1bbb8.pdfIn PDF document text
    • https://vizipelijokefar.weebly.com/uploads/1/3/4/5/134512389/werujuku_kivulibivu_penom_pijemi.pdfIn PDF document text
    • https://fuxakitedev.weebly.com/uploads/1/3/5/4/135400966/mopozopisil.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fudejob.pbworks.com/w/file/fetch/144516780/maxxforce_9_oil_capacity.pdfIn PDF document text
    • http://mukibilevejo.pbworks.com/f/ecuaciones_diferenciales_homogeneas_con_coeficientes_constantes.pdfIn PDF document text
    • http://bowawesup.pbworks.com/f/how_to_turn_on_keyboard_light_windows_10_shortcuts.pdfIn PDF document text
    • http://gazumadu.pbworks.com/f/rbse_class_12_chemistry_notes_in_hindi_download.pdfIn PDF document text
    • http://bezawagiga.pbworks.com/w/file/fetch/144560034/mefaxapejasogesipitiseg.pdfIn PDF document text
    • http://jesababa.pbworks.com/w/file/fetch/144413985/taminegavowejunoj.pdfIn PDF document text
    • http://lexibitite.pbworks.com/f/xowituriwizazakopaxowi.pdfIn PDF document text
    • http://paderukut.pbworks.com/w/file/fetch/144440139/bahubali_2_full_movie_download_in_hindi_hd_free_download_skymovies.pdfIn PDF document text
    • http://funinupun.pbworks.com/w/file/fetch/144412041/kulaguwerirulamaxuxegu.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_off0000e366.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE366 5476 bytes
SHA-256: 682d4bd225cf36c25619e07eaa4da931262f9f840d24140c0b9135d8b7fdc35b
font_01_sfnt_off0000f5e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5E8 10936 bytes
SHA-256: 658daa3bf903cb69b9039b72b0778b90fa88e65539b25cfb2dc3198f68e6c6b7