Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6545dbc0c3ebe51…

MALICIOUS

PDF

73.9 KB Created: 2021-03-11 10:36:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: ce0d4003b7c376ed026d366bc5a8782e SHA-1: 2322cb75a84f89008f86e14f0389c97575f14121 SHA-256: e6545dbc0c3ebe51baffcabfea1164b54f1fb1f09f577a47f9a039d0a03d0c57
184 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to disposable hosting and redirector infrastructure, indicating a phishing or scam attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links are characteristic of a malicious document designed to redirect users to harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://dafemum.ru/strik?utm_term=fender+rumble+100+bass+amp+price In PDF document text
    • http://rijewomel.scienceontheweb.net/scag_turf_tiger_2_owners_manual.pdfIn PDF document text
    • http://shopeuro.pro/5149555483xr08g.pdfIn PDF document text
    • http://siwivelijutore.medianewsonline.com/13773174890.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370097/normal_5ff84e1e6b292.pdfIn PDF document text
    • http://realnoe-obshenie.online/love_yourself_highlight_reel_piano_sheet_musicltsh6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470209/normal_6024920bea189.pdfIn PDF document text
    • http://gratoram.site/plug-in_silhouette_connect_crackdo5d1.pdfIn PDF document text
    • http://bnl-jobs.com/akbarnama_banglakunrh.pdfIn PDF document text
    • http://specialsale.info/how_to_reset_danby_dehumidifierqlyko.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367950/normal_5fca56a68edaa.pdfIn PDF document text
    • http://reduslimitalia-official.website/veriguxizorajawere8wpmu.pdfIn PDF document text
    • http://niburufajanuto.sportsontheweb.net/what_is_signature_valid_in_aadhar_card.pdfIn PDF document text
    • http://pimifawimonidij.mywebcommunity.org/dobabuxinilo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402533/normal_5ff42add9b04c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410459/normal_5ffb8a89bb359.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496378/normal_6041b9ce0e954.pdfIn PDF document text
    • http://lnstagramsupportingcenter.com/chaar_sahibzaade_1_filmja65z.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470980/normal_602fe580c24b8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://felugibesixe.onlinewebshop.net/damn_good_friends_quotes.pdfIn PDF document text
    • https://s3.amazonaws.com/xuxifuzituwu/wotogitulopuwobufi.pdfIn PDF document text
    • https://s3.amazonaws.com/sazixipame/vewepu.pdfIn PDF document text
    • https://s3.amazonaws.com/zarevizebi/26949873623.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_off0000e1c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1C5 5508 bytes
SHA-256: 11c7bf9b823477e80f1f44e7426f7716206082465a69b27260d7534062779b34
font_01_sfnt_off0000f45f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF45F 11208 bytes
SHA-256: fdceea7bcc6a5135907736942c94e554eb20e608c71772aceec2bcdae40cd64b

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