Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2d56e3baa7a6511…

MALICIOUS

PDF

84.0 KB Created: 2021-05-09 00:09:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 633924346a61414b147c0191eed1ca18 SHA-1: 0364b810764e6ec867168e36a3e0dd7703028001 SHA-256: c2d56e3baa7a651174ce0c7f6f12fbeb3c027dda7c1acb5d5fdd2115c723328e
194 Risk Score

Malware Insights

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

This PDF file is classified as malicious, exhibiting characteristics of a link farm designed to redirect users to potentially harmful content. The PDF contains numerous external links, including one pointing to 'lawigut.rf.gd', which is flagged as disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://leonvi.ru/strik?utm_term=what+is+an+example+of+a+soft+skill+in+aba PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366327/normal_6031d4087592a.pdfIn PDF document text
    • https://cdn.sqhk.co/vesagivara/iuhehfK/vinunonimepafesanerol.pdfIn PDF document text
    • https://cdn.sqhk.co/pibilebomek/hjjheCo/solution_survivor_zombie_outbreak_walkthrough.pdfIn PDF document text
    • https://cdn.sqhk.co/kazamepa/kggjX4l/solve_it_3_killer_fans_phone_password.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365636/normal_5fe73894e5887.pdfIn PDF document text
    • https://cdn.sqhk.co/lizuloka/zYhjbSy/flowplayer_apk_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/gukugifixija/heiiOib/funny_pictures_of_animals_with_words.pdfIn PDF document text
    • https://cdn.sqhk.co/dulunukosep/ebLgihs/18347725675.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460449/normal_5fcc7f1069311.pdfIn PDF document text
    • https://cdn.sqhk.co/dejuxafe/OntDhc8/zafusediwexesatilepajako.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lawigut.rf.gd/31309411247.pdfIn PDF document text
    • https://90ff81fc-98d9-4e53-96a3-aaa5c1c2042e.filesusr.com/ugd/bb5aff_d78a5bc6a73d43c1ae93e055244689bc.pdf?index=trueIn PDF document text
    • https://32e47638-7206-44c1-ad53-5c6f9176402e.filesusr.com/ugd/e00742_8e87eca003b741feb4d56ceb06864653.pdf?index=trueIn PDF document text
    • https://631ffb88-cf2d-4844-8d6b-9338a1b21cc5.filesusr.com/ugd/d24e6f_14a2e2ed00d04c92ad312259b7c8bc58.pdf?index=trueIn PDF document text
    • http://vufeligix.rf.gd/77824472906.pdfIn PDF document text
    • http://gaxodusipif.epizy.com/video_show_apk_free_for_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/fokapikow/dazikego.pdfIn PDF document text
    • https://30cc9e9c-6145-4029-bfdc-d0561bdb3a10.filesusr.com/ugd/0dcf4b_ea0eac2805424cff87bdc6d642ea999a.pdf?index=trueIn PDF document text
    • https://29aa9d28-cc9d-45fc-8d86-3718b5881c84.filesusr.com/ugd/74c34a_34749f52385d46ac874e27f4b1335ab2.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lewuli/fomojo.pdfIn PDF document text
    • https://s3.amazonaws.com/wujodibu/kizogixe.pdfIn PDF document text
    • https://s3.amazonaws.com/gowebabuxogiro/asphalt_6_adrenaline_mod_apk_free.pdfIn PDF document text
    • http://rukujabaxelab.epizy.com/brian_tracy_no_excuses_full_free_download.pdfIn PDF document text
    • http://watonorobawar.rf.gd/english_antonyms_free_download.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_off000106bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106BC 5332 bytes
SHA-256: 38f426d123d9f01f74d711c2b30f2aa9418605dc96ae62f93fd202d5f05bb060
font_01_sfnt_off000118ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118CA 11776 bytes
SHA-256: 7f01b919cb14c5b35eab6ce363daf31f17ce6f1746d51168f2dfc19b8535e740