Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0ce562d0356efbb…

MALICIOUS

PDF

84.2 KB Created: 2021-06-03 22:02:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 4ae855b0b27fb69765cf01a44bb8270b SHA-1: 6895d8718c05909831620c25ec10cc4d87b8bd78 SHA-256: a0ce562d0356efbb783cf9ed4eefdd579031f865bdc71fd9df0608265e3cf37b
186 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many hosted on disposable domains, suggesting a link farm or phishing operation. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded URL 'https://irlanc.ru/pbw?utm_term=sonu+ke+titu+sweety+cast+full+movie+online' appears to be a lure, possibly redirecting to malicious content or a phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://irlanc.ru/pbw?utm_term=sonu+ke+titu+sweety+cast+full+movie+online PDF link annotation
    • https://wutosalix.weebly.com/uploads/1/3/4/6/134635680/pesolal_vajogukevusabi_figiditomibud_sugalofegi.pdfIn PDF document text
    • https://texitanoz.weebly.com/uploads/1/3/0/7/130739996/vosuket.pdfIn PDF document text
    • https://jagobedumaniso.weebly.com/uploads/1/3/0/8/130873939/salogi.pdfIn PDF document text
    • https://dukinuvofipul.weebly.com/uploads/1/3/2/7/132711936/677355.pdfIn PDF document text
    • https://jafufikatovovew.weebly.com/uploads/1/3/4/4/134481731/f3c4306.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409827/normal_605fd3da27518.pdfIn PDF document text
    • https://fukajupiboxa.weebly.com/uploads/1/3/5/9/135973929/0de777ef2ecbd.pdfIn PDF document text
    • https://larunigilusevim.weebly.com/uploads/1/3/5/3/135320243/4ceb30.pdfIn PDF document text
    • https://nojevuxosat.weebly.com/uploads/1/3/4/3/134357696/939a57.pdfIn PDF document text
    • https://sasominafa.weebly.com/uploads/1/3/4/3/134362810/wawukibijagasikan.pdfIn PDF document text
    • https://bamojatiw.weebly.com/uploads/1/3/4/6/134699288/pemitu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369909/normal_601d839aa8e26.pdfIn PDF document text
    • https://ranepudanaliv.weebly.com/uploads/1/3/4/0/134000181/727148.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421333/normal_601a45851313b.pdfIn PDF document text
    • https://monirazosakazux.weebly.com/uploads/1/3/5/3/135316997/888d0b17.pdfIn PDF document text
    • https://sujofunipus.weebly.com/uploads/1/3/4/5/134502209/5345232.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf60e770-44c2-47f9-a7ac-3375b3d088da/free_apple_id_account_with_minecraft.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d56bd0df-de70-44e8-a942-2a5543b1b9b6/substance_painter_student.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8fb4d194-a9f4-49e3-8c9f-b4cbce2e10ea/photoshop_shortcuts_dont_work.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a763e00-b462-4279-9b31-6beebdf0bce5/bogebafodowupa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81a825d7-528a-44f3-86bd-e25cc6955d94/when_god_winks_at_you_summary.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ab25aca-7bbb-469b-8697-e05229c0d5f4/la_carcacha_meaning_in_english.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e4c7ef4-b33f-458d-a2d5-e2ea7e3285c7/epicgames.com_login_ps4.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f1c6be53-53bf-42d7-a985-d356dda6a243/danivonepovewerul.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000100f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100F7 5352 bytes
SHA-256: fac53e64a41c8491c469961f628c05f0a274e9c83f7dfb8f18f17172feaed355
font_01_sfnt_off00011342.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11342 1800 bytes
SHA-256: 51ebeec29509b87aa858d500e37ac8853184703d07d1f913ce36d8e1dc7764c0
font_02_sfnt_off00011bd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BD0 11196 bytes
SHA-256: 98e7311175165dffc5c7051fe2d0d1ff55e77f04569a1c67e5085903e65a7a89