Malicious PDF — malware analysis report

Static analysis result for SHA-256 adf3f5a4f61e60a0…

MALICIOUS

PDF

71.7 KB Created: 2021-03-06 02:41:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 96ff4b959cb3fb40309a54c1e48ac89d SHA-1: 67867f84e9ba0845beb6ae9671222656d9efe9ac SHA-256: adf3f5a4f61e60a03c196da5d28947d1a97e6c2e911dfadd0768b139c414da08
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jottigo.ru/award?keyword=why+is+my+spa+not+heating PDF link annotation
    • https://xatiletovolut.weebly.com/uploads/1/3/1/4/131409128/2abf396727a.pdfIn PDF document text
    • https://tidevaxapoled.weebly.com/uploads/1/3/5/9/135971763/627460.pdfIn PDF document text
    • https://dogaralezuj.weebly.com/uploads/1/3/1/6/131637140/paware_vowedegewe_xibuxil.pdfIn PDF document text
    • https://vevuduwas.weebly.com/uploads/1/3/0/7/130775740/kufepufe.pdfIn PDF document text
    • http://nizavevorupuj.mywebcommunity.org/how_to_pair_a_blueant_bluetooth.pdfIn PDF document text
    • http://kakafeg.scienceontheweb.net/singer_4423_heavy_duty_sewing_machine_canadian_tire.pdfIn PDF document text
    • http://yourdesk.website/72305435545kll78.pdfIn PDF document text
    • https://gesojotumone.weebly.com/uploads/1/3/4/6/134614539/wetolexajufajivawo.pdfIn PDF document text
    • http://zawugudumi.getenjoyment.net/has_the_crown_been_approved_by_the_royal_family.pdfIn PDF document text
    • http://brosbass.com/fur_elise_jazz_version_sheet_musichmxjo.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/1af97d15-495d-43aa-94a7-64df60972b44/46506076400.pdfIn PDF document text
    • https://3f5765b5-411c-4b28-96d1-a1e3b219bcee.filesusr.com/ugd/ca847e_fea3a3d123094c7792e4e4717e1b7275.pdf?index=trueIn PDF document text
    • https://979cd01f-16ea-4d2c-b189-234964c95597.filesusr.com/ugd/d4c4cf_44104b6c0dd94fc89826581c67dc72dc.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/f3f61a6e-eb24-418c-adb2-62e12bfe5538/how_to_eat_fried_worms_movie_cast.pdfIn PDF document text
    • https://5c71d6b4-13b5-43a2-97a4-9a0eba4d0f4d.filesusr.com/ugd/0f1814_ffa1bdcf1eab49acb3c242195c0c505c.pdf?index=trueIn PDF document text
    • https://828c6a01-da61-4814-986a-f72e64f4f334.filesusr.com/ugd/cdfdba_2e7f446974364b66a816c1417d7fff78.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/efea6a6d-8298-494b-9452-26cba034b731/rukokaroxo.pdfIn PDF document text
    • https://2a082fd4-e93f-4b8e-9e59-408fa046b31c.filesusr.com/ugd/e334dd_6b53c523981e4d1d9470dd6cac08de71.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dbb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBB3 5220 bytes
SHA-256: c9646cabddce1eab25b768230298e70a7fc0c94345c334f22949ae6a072faf3c
font_01_sfnt_off0000ed67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED67 10692 bytes
SHA-256: 9c054703bf3866388c99f0c2b1272937050be28d10c76fff8448919a4b38da96

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