Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc9f261cbbef2fd2…

MALICIOUS

PDF

42.5 KB Created: 2020-10-26 10:17:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 7b9abc05dc1a753b40fc268ea0760783 SHA-1: 5bd29c920119955e86d5bd04183086f938564868 SHA-256: dc9f261cbbef2fd29ba828e318f592611dd11bbbdce43db526a1fc6a2a1f10c9
184 Risk Score

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/pify?keyword=android+google+sign+in+loop In PDF document text
    • https://fijapirugonobi.weebly.com/uploads/1/3/4/3/134315317/razuwabuma.pdfIn PDF document text
    • https://kijatuvoriwoze.weebly.com/uploads/1/3/4/3/134352029/dukufilosup.pdfIn PDF document text
    • https://vaferomesab.weebly.com/uploads/1/3/4/3/134351928/gawomumatipoguronum.pdfIn PDF document text
    • https://buliduxefexefux.weebly.com/uploads/1/3/1/6/131636978/zisej-mewutaxadolaz-betabasemafabas.pdfIn PDF document text
    • https://zekasujiminog.weebly.com/uploads/1/3/4/3/134366003/jemelajasu.pdfIn PDF document text
    • https://jesasifewom.weebly.com/uploads/1/3/1/4/131453969/vosakakojulo.pdfIn PDF document text
    • https://jonukejunuxesa.weebly.com/uploads/1/3/1/4/131409236/9f5b9768.pdfIn PDF document text
    • https://sumozizadux.weebly.com/uploads/1/3/4/2/134266097/nazonip.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/19a64e72-7a9a-4b17-b34e-c4d7a78e8c89/wabeves.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fff31feb-0ead-4e0a-b226-b57c8fdcfc17/xubolala.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d91817d-ddae-4b80-9068-1ca3ac498647/40087918523.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/882dc7bc-a85b-4799-a479-9496e1802ccf/92381828324.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b4f6f90-e950-4544-85fa-595b0069c306/74780568097.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0998/7992/files/2645897268.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/5855/9641/files/remote_desktop_vnc_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9477/9051/files/serenade_for_strings.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5706/9736/files/coa_development_steps.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/3734/2882/files/chrono_trigger_android_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/zobuwubedak/riragebejojotesedomaruro.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/nevizokonawuti.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/vowufazegelegijuvug.pdfIn PDF document text
    • https://s3.amazonaws.com/vavale/livro_cristianismo_primitivo.pdfIn PDF document text
    • https://s3.amazonaws.com/suzixegazunow/blockchain_technology_in_supply_chain.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e033c12-7f81-4ccb-817d-07f57ee57798/liwiged.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02fc2c24-58ca-41a8-8958-8552d57f162c/trudeau_salt_and_pepper_mill_refill.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_off000067b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67B3 4908 bytes
SHA-256: ca261428bfa917fcfdae08cb27fa3cd31520d966d2fa89d4b3355c11fa0dd387
font_01_sfnt_off00007874.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7874 10684 bytes
SHA-256: 148881256a20e7a3c58365c40286ac05901bf1ad9d529b18127f7e7351b72796