Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6852d757c47277f…

MALICIOUS

PDF

45.3 KB Created: 2020-10-15 18:12:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 0f2668504256d25bd0ee5f000c0978a1 SHA-1: 61470c43e7644f5196ac62dcbcadd3010dc0fc16 SHA-256: d6852d757c47277ff546d2858f78199f8bcc0e73d1daa6ae81754d4c58feb7c2
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/123?keyword=metodologi+penelitian+kualitatif+deddy+mulyana+pdf In PDF document text
    • https://megadezatesaram.weebly.com/uploads/1/3/0/7/130776649/fukakix_lobonagoke_voxajutafetufos_xujimozoxivid.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/9276785.pdfIn PDF document text
    • https://viweposedijul.weebly.com/uploads/1/3/1/0/131070314/ramolimisajo_wozos_rosokobaji_gatuwutujagas.pdfIn PDF document text
    • https://rewemekekebaz.weebly.com/uploads/1/3/1/4/131406535/48ee8.pdfIn PDF document text
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/sijuwoxujupid.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366676/normal_5f87716d202b9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367311/normal_5f8757f6ac176.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365635/normal_5f87779124920.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368228/normal_5f877e3fdf1eb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368495/normal_5f880c0604f32.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365659/normal_5f87161934eab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369179/normal_5f87a1895bab7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366367/normal_5f87b9043892a.pdfIn PDF document text
    • https://site-1044184.mozfiles.com/files/1044184/91448399662.pdfIn PDF document text
    • https://site-1037219.mozfiles.com/files/1037219/305828272.pdfIn PDF document text
    • https://site-1045364.mozfiles.com/files/1045364/download_piano_tiles_3_mod_apk_revdl.pdfIn PDF document text
    • https://site-1042504.mozfiles.com/files/1042504/30552998714.pdfIn PDF document text
    • https://site-1048447.mozfiles.com/files/1048447/vadidorimimazikunidi.pdfIn PDF document text
    • https://jizonuwuko.weebly.com/uploads/1/3/0/8/130814311/47c4dd4d3e95.pdfIn PDF document text
    • https://wivupenoremew.weebly.com/uploads/1/3/0/7/130775018/dikud.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/83a49705-1b5e-4955-8577-5d6b5d9fc3ed/xupedaluwewadejajekup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/03810082-1405-4713-9f61-92bd7d260c03/27972219274.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d469f77-93ae-4dd4-b7e7-224ff57bb713/34755921517.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ad08634-70f2-4c79-823b-11fb9f17a324/65365427558.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off0000891b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x891B 18624 bytes
SHA-256: 7b2b616121d041cd0f8278d2a3ad5fb9a5be47c7fbb43cbac89bf90348a76ed3
font_00_sfnt_off000053f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53F1 5256 bytes
SHA-256: d7562359ba1d7fec7a211d06ac023504ad0de977c01ab8ac9656852889370943
font_01_sfnt_off000065e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65E0 10320 bytes
SHA-256: 9177e3a4aaf417a78bb052aec9e395d71776fdbb4a14cf1817f08e44dd9b6af0