Malicious PDF — malware analysis report

Static analysis result for SHA-256 feca8ade52a28efe…

MALICIOUS

PDF

85.4 KB Created: 2021-03-28 01:19:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 6b04459957dc951bcf01b41ac2854871 SHA-1: 1b46f2e3c73b71a5f5f017721d8fa00b77ac3c8e SHA-256: feca8ade52a28efeb620f0cb8930b931ba0cfbf882c5e9bb10169d0f50841421
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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
  • 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://jacksth.ru/strik?utm_term=what+is+the+best+breast+pump+from+insurance PDF link annotation
    • http://wtia.space/12611939437n454g.pdfIn PDF document text
    • http://trysoda.pro/nitusulirivanelutoxomawomlc6av.pdfIn PDF document text
    • http://disozire.mygamesonline.org/rivatafawutuzij.pdfIn PDF document text
    • http://rolapisi.scienceontheweb.net/75139748482.pdfIn PDF document text
    • http://air-calm2.club/315307191513jecv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jibimom.myartsonline.com/exodus_wasteland_bestiary_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f9796e4-43e4-4c7d-b7f3-ce5ad6c2d52d/ferrari_250_testa_rossa_0-60.pdfIn PDF document text
    • https://s3.amazonaws.com/neviwove/vobarikapozomututasexe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/553c4dd4-fbbf-41e1-9bed-534bf11fa609/jofidatiloweri.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8eb5108b-2f9e-4a43-9511-285a21b46337/is_the_world_poker_tour_still_going.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/363e8829-9f5a-4142-94fa-3c0d0f9011e5/55436999642.pdfIn PDF document text
    • https://s3.amazonaws.com/lakujusitejojet/junevilakubosidafo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e48229a7-e7b7-4b85-831a-6488d2d2a87e/3164683662.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2849d02f-85f8-4a3b-ac62-bbd69a068b71/sudaxoxelimogamidevowanef.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9321124e-5b59-452d-becd-e45bd3d8c386/fiwap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd8b6dc1-b436-4410-a4d8-2ab071d4c0dc/ill_be_back_better_than_ever_quotes.pdfIn PDF document text
    • https://s3.amazonaws.com/kelageketisefuv/how_to_read_beurer_blood_pressure_monitor.pdfIn PDF document text
    • http://gogujigasad.onlinewebshop.net/94494798867.pdfIn PDF document text
    • https://s3.amazonaws.com/wizedumi/22997463403.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0472ca9e-bdb4-49ce-b521-ed517dc4e3ac/kumokul.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/248df7c9-4895-476f-a34b-b322ccb9370b/32359545391.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8a4b26a-c3d1-42a0-8708-50ff851d7234/vinovezuwosum.pdfIn PDF document text
    • http://nuluwajewugutik.onlinewebshop.net/68828419473.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/94f52de7-f83d-4c81-8b5e-f5f46ff402ce/dutubumevaxezigoza.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010f3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F3E 5376 bytes
SHA-256: d4a79e2ffe45da5751631fac011c033ddab4a653e82f68c07ccefdde60c20342
font_01_sfnt_off00012166.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12166 11412 bytes
SHA-256: 62f69e3eff9d958fa7db11892a774eba58ee071e77d65008f51c8d490df11c7a

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