Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ec15987434a0b47…

MALICIOUS

PDF

84.0 KB Created: 2021-03-05 16:48:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: b7c408512c31ed28e89345f793906174 SHA-1: f9886599d235c0dd96049a06d53f7726be114305 SHA-256: 5ec15987434a0b4748c3591c39573c67fafcde17fd569a5a1501441baf0d050b
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://botokaw.ru/aws?utm_term=nordic+track+ski+machine+parts PDF link annotation
    • https://zefivevolexu.weebly.com/uploads/1/3/1/6/131637056/e2ed8de3ad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417308/normal_5fd3d13c14e6c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376120/normal_6012789243ae7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393345/normal_5fcdd0d97ec8c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408866/normal_6007263a4c6ee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445731/normal_6014742abdf85.pdfIn PDF document text
    • https://lekomuge.weebly.com/uploads/1/3/4/7/134773229/zoweginuve.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456989/normal_601dbcab3512a.pdfIn PDF document text
    • https://kazenatujexisof.weebly.com/uploads/1/3/1/6/131637291/3431664.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488102/normal_5fda58c7eef1f.pdfIn PDF document text
    • https://talekadibozevo.weebly.com/uploads/1/3/5/3/135393667/keduparoxava.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481423/normal_5febd05b229ce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490735/normal_5fe864cdcbc80.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/likadojivivofu/a_valiant_life_594.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/97f468cf-9dda-4919-9b70-7fcdf5610093/suvimepoda.pdfIn PDF document text
    • https://s3.amazonaws.com/geradi/31317156508.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bac41332-9df3-49eb-9b29-9a28affc620d/how_to_become_a_teacher_in_mexico.pdfIn PDF document text
    • https://f730d15c-1921-46d2-b6d4-288333e40990.filesusr.com/ugd/e2c223_1181893afc3246a58bf58ee546519af4.pdf?index=trueIn PDF document text
    • https://1e438cd7-6f3b-42ac-a97b-d13a75fa135b.filesusr.com/ugd/0c268c_e73d140b664f4b48b0052f8014af8b5a.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xiwevitox/22645443364.pdfIn PDF document text
    • https://s3.amazonaws.com/makumapikeze/29762135228.pdfIn PDF document text
    • https://s3.amazonaws.com/gafedupeba/58798739798.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_off0000fb34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB34 5100 bytes
SHA-256: eb1c3a88b0eb27defe0ed303a7bac868e56635dc182a349b07d26ab3062366ce
font_01_sfnt_off00010c5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C5F 11368 bytes
SHA-256: b374da311ce4b33f5f4abd93413de134a64b2692b9c36b66e1fe011ffade656a
font_02_sfnt_off0001328e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1328E 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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