Malicious PDF — malware analysis report

Static analysis result for SHA-256 cbd3d3f0de669367…

MALICIOUS

PDF

71.6 KB Created: 2021-03-05 07:42:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 8788c8c13188e30a413996a9f10aa4b7 SHA-1: 4837298bc656f6ac627648fe6c2da9d1e6fa96c2 SHA-256: cbd3d3f0de669367e0608f09b10cf03823c771524a05d2f0ca6490e53e22eb32
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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://druttle.ru/wix?keyword=stihl+fs+56+service+manual PDF link annotation
    • http://kozidozilujivox.getenjoyment.net/mudale.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482671/normal_6001c8b2db243.pdfIn PDF document text
    • https://kosazalosir.weebly.com/uploads/1/3/2/8/132815054/nuginitawonuju_fuwapavowe_miduwibofake.pdfIn PDF document text
    • https://seporarutigofu.weebly.com/uploads/1/3/2/7/132741198/02e0edd06.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487903/normal_601b47c223251.pdfIn PDF document text
    • https://subijiderekura.weebly.com/uploads/1/3/4/6/134616270/jepitovek.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388067/normal_6017518285dd6.pdfIn PDF document text
    • http://saxobupazes.sportsontheweb.net/a_river_runs_through_it_title_meaning.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/desenaz/what_is_a_mri_guided_breast_biopsy.pdfIn PDF document text
    • https://e216d865-ddc7-438b-99b2-64609380b1bb.filesusr.com/ugd/7ae8b3_305db4011c8b47a48382c2bb4c4bc882.pdf?index=trueIn PDF document text
    • https://c46c713f-5e69-4c64-aad4-d86f29440f76.filesusr.com/ugd/957c7b_900296d7a61943fa9cfd31a7e0d0bc64.pdf?index=trueIn PDF document text
    • https://57fc24c6-ba7c-430a-bdae-05304608b610.filesusr.com/ugd/bc9c68_fcc1eb3522e94ee2980bbeb89feb7f9c.pdf?index=trueIn PDF document text
    • https://e824aeac-d22a-4b45-bb3c-17051d6ee04f.filesusr.com/ugd/de60da_3f0ab821f53f4cd6aae908521192a7de.pdf?index=trueIn PDF document text
    • https://cd70d4e5-4a1a-4071-96d1-f2415ea5ece1.filesusr.com/ugd/7f46b5_d58c25701d734bd991bcafaa00de6985.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xufujofaleki/agnisakshi_serial_song_in_telugu_free.pdfIn PDF document text
    • https://c1cb471f-fc5c-4ef2-b3e1-4d0d0d09d135.filesusr.com/ugd/cc5b41_9f15ab1c58834b78b6f02e09e340d714.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jiwisigetizoxif/garden_background_hd_images_for_photoshop.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_off0000ce24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE24 5332 bytes
SHA-256: 741f4676288786ecd3d2390ee0bd8ab71bb2ce1ee5a3aedb23c0b267266c0384
font_01_sfnt_off0000e018.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE018 10208 bytes
SHA-256: f081c4bba7ad621bcc69efbef5fceea55ec310c79ae9497ca3dea1dc54b47f17
font_02_sfnt_off0001031d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1031D 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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