Malicious PDF — malware analysis report

Static analysis result for SHA-256 53014bb6b0ca1cf8…

MALICIOUS

PDF

88.5 KB Created: 2021-04-04 04:30:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 204e06acf59665cfef651bb4aba4e0f0 SHA-1: 7f64d8dc390b364c81e215e6a00970056f0e4144 SHA-256: 53014bb6b0ca1cf8dee07a19fc66ce66722f04ceb9b893518663cbe708aadbe2
134 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 phishing lure. It contains numerous links to disposable hosting domains, suggesting an attempt to distribute further malicious content or redirect users to phishing sites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 6

  • 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.
  • 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://dugedepap.ru/award?keyword=bihar+tet+result+2020+download+pdf PDF link annotation
    • http://bimovixexena.scienceontheweb.net/ejemplo_de_auditoria_financiera_de_una_empresa.pdfIn PDF document text
    • http://sodofuwaxidida.22web.org/how_to_download_sims_3_expansion_packs_for_free_using_utorrent.pdfIn PDF document text
    • https://kifoguwo.weebly.com/uploads/1/3/1/3/131383532/5934303.pdfIn PDF document text
    • http://kitukotobov.medianewsonline.com/56037417611.pdfIn PDF document text
    • https://sokefumupuzezu.weebly.com/uploads/1/3/5/9/135991751/gakejo.pdfIn PDF document text
    • http://vizabofunedaj.22web.org/22701406231.pdfIn PDF document text
    • http://rasidafepu.mypressonline.com/fun_facts_about_the_human_body.pdfIn PDF document text
    • https://wanuwoziburake.weebly.com/uploads/1/3/4/4/134458428/3753197.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://uploads.strikinglycdn.com/files/4988cf6e-8b24-41a6-8176-39a1b6407aae/what_emotion_represents_green.pdfIn PDF document text
    • http://fafinonez.rf.gd/curso_completo_de_apicultura_layens.pdfIn PDF document text
    • https://ff743420-c5e2-4527-a456-70ddb2a1abd8.filesusr.com/ugd/5178f2_dc1ec1946e8445a8b693bcb56a605b38.pdf?index=trueIn PDF document text
    • http://sikofus.epizy.com/latest_ielts_listening_test_with_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91dfff5d-2a69-4b1a-89a9-b7169d0ef029/short_fairy_tales_for_middle_school.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc7c9abc-f444-48c5-9318-c4a181e2f061/84951304654.pdfIn PDF document text
    • https://9df6e0af-a028-4e88-91ba-61a1b37318d5.filesusr.com/ugd/7c1f05_bdcbfa9d874448ed8431ab651f6b84a1.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c82c2cf-4b94-44fb-b00d-335451759272/tilif.pdfIn PDF document text
    • http://vonolukover.epizy.com/biblical_fasting_and_prayer.pdfIn PDF document text
    • http://gotapomoleza.epizy.com/80850812243.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68792fc8-617c-44e5-9e56-1337aadff8fa/webozemiras.pdfIn PDF document text
    • https://a86b13d2-a9ad-4039-ad74-10d2f7332aba.filesusr.com/ugd/6e2451_2dec8a599634493cad70b1aedd6c6301.pdf?index=trueIn PDF document text
    • https://ec679cc6-872a-45a8-b2fd-b1bc8f6ddb77.filesusr.com/ugd/d1d005_62a98730e2044a36850cfbe914158b3e.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f2e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2E4 5544 bytes
SHA-256: 9aa032d80830e0ae58b95f42011243734be6161f3276ddcce974fd5a8899ce10
font_01_sfnt_off000105cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105CC 3720 bytes
SHA-256: 6539b129c5cd894636dc8f40f53a156c00c8f46378ab4f137c96d687a1cff6ed
font_02_sfnt_off0001112f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1112F 11208 bytes
SHA-256: a626bf2f16d071addf4a375969cd9594136822025afa99bd9619ecd36b18bb0b
font_03_sfnt_off0001377c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1377C 7792 bytes
SHA-256: d7b517d5680430d95be0921a317ebf4494281cd7360fca19624c451d92dc2f92

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