Malicious PDF — malware analysis report

Static analysis result for SHA-256 019ff8ac55751ea7…

MALICIOUS

PDF

84.2 KB Created: 2021-03-12 07:26:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 33ee615c96bf7e3ef9262b3bb1105c54 SHA-1: d1fe42974932c2fce104a299466179550607fd21 SHA-256: 019ff8ac55751ea70e98e51a7d40b1e03e2667a32aeb84fc0aa5ad42bca0129a
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with one prominent URL pointing to a domain associated with malicious activity. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting an attempt to manipulate search engine results or distribute malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • 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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jumiwimov.ru/strik?utm_term=modal+verb+english+grammar+in+hindi
    • https://wewofubajibopa.weebly.com/uploads/1/3/1/3/131381003/pikemo.pdf
    • http://pixell.store/zikesamifevudigaked3k.pdf
    • https://suguturame.weebly.com/uploads/1/3/1/4/131438741/doraxegur.pdf
    • https://cdn.sqhk.co/silakozafi/iicnThe/49836043222.pdf
    • http://help-mediasupport.com/raburatebomob4oex.pdf
    • https://cdn.sqhk.co/lexoxuxoluvi/mgiihnn/zixogipavi.pdf
    • https://kuzosilu.weebly.com/uploads/1/3/2/8/132815793/ceb662090d.pdf
    • http://alcexpress1.xyz/mi424wr_rev_f_default_passwordcg5ny.pdf
    • http://apparently-home.com/fundamentals_of_chemical_reaction_engineering_solution_manualjy9ot.pdf
    • https://cdn.sqhk.co/xaranoraf/hjoIqbi/video_editor_like_windows_movie_maker.pdf
    • http://webcam-model.online/troy_bilt_4_cycle_weed_eater_oil_in_air_filterlirl2.pdf
    • https://bexoligimes.weebly.com/uploads/1/3/4/3/134314561/gajaxototijedat_lumeloferizomub_sofafozis_dumepezejisobaz.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://fedorahosted.org/lohit
    • https://4b4ea461-5266-411b-8735-d5290551f550.filesusr.com/ugd/7fedcf_b1d3c368c3654b53a857e0e918beefe8.pdf?index=true
    • https://s3.amazonaws.com/wegemebufojafak/32493767826.pdf
    • https://s3.amazonaws.com/pasutiz/tiruboxunelugoresus.pdf
    • https://000bb656-a8cb-4e8b-9327-0b0ec99f56fe.filesusr.com/ugd/3f812e_566b419dc4164633a8b6d567a4ea9cd7.pdf?index=true
    • https://c8f6a2ed-bc8a-4fd4-b26a-19707db7c4cd.filesusr.com/ugd/1cc7e8_fffe0e24f6e34444a6f105f878af5ba6.pdf?index=true
    • https://84d5b3ab-51dd-4312-87b7-51df18fb3b26.filesusr.com/ugd/9ea9b6_245be630c64e4a519789a42083cbed62.pdf?index=true
    • https://37bcb4aa-7747-4ff6-a352-0e22bf983c21.filesusr.com/ugd/4393d3_d733cc2f4c8f4e9c87645f106fe28394.pdf?index=true
    • https://f4b9ed98-44c1-44e6-9966-d9817cd43de7.filesusr.com/ugd/9ced5d_e840ce93051a49699de9aeeab2847a92.pdf?index=true
    • https://s3.amazonaws.com/sajatesawodiji/dead_space_2_apk_for_android.pdf
    • https://70fbc5f3-53e4-4072-9ff7-a5862d19847b.filesusr.com/ugd/bb3bf9_3da894bfbd13402aa9272b0db12b8382.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ef13.bin
9362d0d09d22f0f7e384b499d1d6f8cbbd32458bf987a8c4e4462eda965226fd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEF13 5152 bytes
font_01_sfnt_off00010067.bin
617af432d1f2af805c166488a994d4ec3d3a6e6b967432177b9d267c0ef360b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10067 11016 bytes
font_02_sfnt_off000125a1.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x125A1 4324 bytes
font_03_sfnt_off000133a1.bin
648d134768cf5e3d44b53ff854579609ce290e93d5f0dc18e137a33adf470c64		 pdf-font-stream PDF embedded font (sfnt) at offset 0x133A1 3944 bytes

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