Malicious PDF — malware analysis report

Static analysis result for SHA-256 612b2b98259d33be…

MALICIOUS

PDF

88.3 KB Created: 2021-03-24 00:06:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 597e68622cfee24534f90d5312c2c9f3 SHA-1: e49f36b283fef6d54320d7a140118c6bbbf85d0c SHA-256: 612b2b98259d33be90bcf1e91c75b6f92101fe3127e6758fdd21a64316b0d8c7
196 Risk Score

Malware Insights

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

This PDF file exhibits characteristics of a phishing lure, specifically designed to direct users to a link farm. The heuristic 'PDF_SEO_LINK_FARM' and the presence of numerous external URLs strongly suggest this intent. The ML classifier also flagged this PDF as malicious with high confidence. While no scripts were extracted, the document's structure and embedded URLs indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 6

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://lozipotod.ru/123?utm_term=cheats+gta+san+andreas+playstation+2
    • https://cdn.sqhk.co/xemugugafot/zbGXgcI/vabunopet.pdf
    • https://cdn.sqhk.co/goduwonon/bQgcmSj/tejoj.pdf
    • http://lojapidabud.mypressonline.com/new_yorker_magazine_cover_december_28_2020.pdf
    • https://cdn.sqhk.co/dukoredod/AIidijc/the_labrant_family_ages_everleigh.pdf
    • https://cdn.sqhk.co/puvaguxumud/jgjajg0/blade_movie_collection_in_tamil.pdf
    • http://luzupogakij.sportsontheweb.net/alteraciones_del_metabolismo_de_las_purinas_y_pirimidinas.pdf
    • https://cdn.sqhk.co/dibirolinu/jhgjja6/92378097980.pdf
    • https://cdn.sqhk.co/marixefe/YggiMHw/bread_runner_meaning.pdf
    • https://cdn.sqhk.co/zokonerozo/dgc4uhe/adderall_effects_on_borderline_personality_disorder.pdf
    • http://beviluxenumiliv.mywebcommunity.org/que_es_cianuro_de_potasio.pdf
    • http://legujepug.22web.org/79561676167.pdf
    • http://bumawusuka.mypressonline.com/animal_encyclopedia_with_pictures.pdf
    • http://rumepado.mypressonline.com/polk_audio_psw10_10_subwoofer.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/835f0d9e-90cf-4d70-9436-ee551d7d6bda/vevonodu.pdf
    • https://2863666b-9d79-467d-9aad-9eeb6dafbdf2.filesusr.com/ugd/6ee3eb_c1becefd05f44dfc8f583a1f3361f287.pdf?index=true
    • https://1c684d3d-b1aa-4d58-8f8e-408f9cf37fac.filesusr.com/ugd/64d889_faf7d9fc9bc249ed861347b872023936.pdf?index=true
    • http://kaxixuzebupajal.epizy.com/asrock_z370_pro4_manual.pdf
    • http://vepawipexujobok.epizy.com/liked.pdf
    • https://uploads.strikinglycdn.com/files/416a3fdf-f304-4bc8-b132-6a0fbeb5608c/zoom_h5_vs_h6_for_music.pdf
    • https://uploads.strikinglycdn.com/files/9191fddd-aadb-4fa2-86cd-f50646ae9c22/how_do_you_determine_scale_size.pdf
    • http://tolepovewatug.epizy.com/83548867691.pdf
    • https://uploads.strikinglycdn.com/files/c444405e-e6e5-4ddb-af8a-3ab666652a07/john_w_creswell_research_design_3rd_edition_terjemahan.pdf
    • https://29aa9d28-cc9d-45fc-8d86-3718b5881c84.filesusr.com/ugd/74c34a_f64946eb4d5e45faaf65e67a91dcd040.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011b61.bin
f4a17faf73f4783fac6098aeb6a0a4e1a2e3c1a8a8add85c3fe8f1d541db2e97		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11B61 5360 bytes
font_01_sfnt_off00012d94.bin
fe6599de6840e284c98ef0db6dc6ddc484c89d202b33a473720bac325514185f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12D94 11288 bytes

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