Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d51041f60449151…

MALICIOUS

PDF

72.5 KB Created: 2021-03-21 21:40:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: c89d66442427ecbf4bccce6b542b8d29 SHA-1: 0868387dc21b988abdfe276ab5729c431857df0e SHA-256: 2d51041f60449151acc7326207a9daa31b453eeff51217410e578208bbf1fd3c
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The PDF contains numerous external URIs and is identified as a link farm hosted on disposable domains, a common tactic for phishing or distributing further malware. While no scripts were explicitly extracted, the presence of external links suggests an attempt to redirect the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://golowaki.ru/strik?utm_term=the+redemption+center+church PDF link annotation
    • http://ses-paypal.com/american_pie_7_movie_filmyzillafm8x1.pdfIn PDF document text
    • https://cdn.sqhk.co/delojiwuguj/jii5jcn/68360432550.pdfIn PDF document text
    • https://cdn.sqhk.co/vanewano/ACjgxw6/galaxy_live_wallpaper_windows_10.pdfIn PDF document text
    • https://cdn.sqhk.co/papowepu/p6eidig/carrie_underwood_christmas_album_tracklist.pdfIn PDF document text
    • http://wamawebikojas.22web.org/xemotulonezevepigibowegok.pdfIn PDF document text
    • http://shoppingyxplus.xyz/the_ultimate_review_packet_ac_dcibluf.pdfIn PDF document text
    • https://birinubawode.weebly.com/uploads/1/3/6/0/136026057/7285000.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481999/normal_6028422e3bd60.pdfIn PDF document text
    • http://idealslimitaly-ufficiale.site/79731210437gg37a.pdfIn PDF document text
    • https://fodolirikixubug.weebly.com/uploads/1/3/5/2/135297927/pawofozef-fojisixutumovu-devare.pdfIn PDF document text
    • https://fulodovujigiw.weebly.com/uploads/1/3/4/0/134016909/nezanamogarok_bekevexal_jigewiviped_dipipefis.pdfIn PDF document text
    • https://falusawo.weebly.com/uploads/1/3/6/0/136084102/lipox.pdfIn PDF document text
    • https://cdn.sqhk.co/falunibesedo/idifRgi/war_during_mughal_empire.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502817/normal_601298b83adf0.pdfIn PDF document text
    • https://xereritotof.weebly.com/uploads/1/3/1/0/131070340/rixatipagel.pdfIn PDF document text
    • https://cdn.sqhk.co/sojowidaz/0XghgfA/children_s_doctor_dentist.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rapodipowunifo.epizy.com/41408086598.pdfIn PDF document text
    • https://abee6ad4-cf47-459a-954e-22b9b9bb30ad.filesusr.com/ugd/4bdc6d_32eceb03a2f6487e97a44fb9b7751ce5.pdf?index=trueIn PDF document text
    • http://jigiwema.epizy.com/81864810580.pdfIn PDF document text
    • https://e86c6366-0652-46cb-9e1f-5633a133dba9.filesusr.com/ugd/510a18_3d02d20a0e1b477183dba350e0212d41.pdf?index=trueIn 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_off0000df97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF97 4844 bytes
SHA-256: f3e65136c3d10f4d2ba125a09f1f451f9397f5785eb21fd3e0c9f95a947fc59e
font_01_sfnt_off0000efe1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFE1 10620 bytes
SHA-256: 08803b4eecc1d9ae9a89efed1c66e0bd08b2df2d8728a426d9fe817e3b4eb37b

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