Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d092078592b6755…

MALICIOUS

PDF

51.8 KB Created: 2020-10-28 10:16:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: e039f8caab4ee8ab45eaa2defc01fd74 SHA-1: 61769c253a1888257547db3bf0a1a70d0df25d64 SHA-256: 1d092078592b675547e7609ecd69bc51a20132f28167a2fd5998b7fccceae2fa
184 Risk Score

Malware Insights

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

This PDF file contains a large number of embedded links, many of which point to disposable hosting or redirector services. The primary malicious link identified is 'https://gettraff.ru/strik?keyword=ralph+waldo+emerson+essay+on+friendship', which is flagged as malicious. The document's content appears to be a lure to drive traffic to these potentially harmful sites, likely for SEO manipulation or to distribute further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://gettraff.ru/strik?keyword=ralph+waldo+emerson+essay+on+friendship In PDF document text
    • https://xezujexowesujol.weebly.com/uploads/1/3/4/5/134502134/f3824.pdfIn PDF document text
    • https://muzaromiv.weebly.com/uploads/1/3/4/3/134380281/gijogase.pdfIn PDF document text
    • https://nasinapalu.weebly.com/uploads/1/3/0/7/130739684/c280bac.pdfIn PDF document text
    • https://nozagovedenide.weebly.com/uploads/1/3/2/6/132682533/roleburiwe_paxipotifi_zakan.pdfIn PDF document text
    • https://fotejisatowonu.weebly.com/uploads/1/3/2/3/132302873/fozujenidu.pdfIn PDF document text
    • https://vafumigoku.weebly.com/uploads/1/3/1/3/131384305/kurizimi-bokijo-jojirobid-jemipixakobuz.pdfIn PDF document text
    • https://wefamojugibe.weebly.com/uploads/1/3/1/1/131164519/2526976.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/c84d8ed7-08d9-443f-9f5f-b5baf1cf924b/boferowifimoxedivimigar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c78f2197-c7dc-4ef5-b9b4-62ba52aad7bd/fikosig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e041beb8-5f3d-4732-a5f2-8241566725dd/xusevunisu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d8214f9-4f13-47d2-9ddc-8af745560064/dapomodabesidapupomovov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dca89cb7-aee3-4900-b144-793164f350e0/30431613870.pdfIn PDF document text
    • https://s3.amazonaws.com/tutapaxi/nadowipigadajif.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/hdfc_life_immediate_annuity_plan.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/fiseda.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/zirisatunadipil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b2ee9ee-95b4-41a3-87e9-730d24031e65/55571356774.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/382050d3-02b6-46e6-88f6-9c87823f6a51/witadoxu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc8bc970-42b8-45fa-923e-27f1f0f6a353/jurijeguruwetoduguri.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5000c5e3-f869-40d8-9f54-bafc219970a6/38041874167.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fcb2fc46-2d57-4446-a1b0-7818b848df1c/82355013814.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb39583c-6865-461f-9c9a-2cb78d22fcd2/93447571194.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9a8b857-2d1b-4944-880e-b9918aa2a97d/3066762009.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7e6b8dc-dd6b-4fcb-834a-1e619e287010/cantinflas_pelicula_online_subtitulada.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64daa791-9a0c-4473-b89c-be57b82b1156/duzije.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_off00008ac5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AC5 5480 bytes
SHA-256: 585026c14dcb2dd060a5097e1b6f48153909832c8342f07ea59f60aee2b7dade
font_01_sfnt_off00009d5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D5D 10604 bytes
SHA-256: ddbcd2b51fa1d420a52a4da63d7d9edadc301bed158e1bb371637f831a31f7d3

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