Malicious PDF — malware analysis report

Static analysis result for SHA-256 b71396c37f46c718…

MALICIOUS

PDF

46.5 KB Created: 2020-09-29 17:01:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 160ba0ae2bba7bd05aa43ced47977403 SHA-1: d1c86c38968c2559626bf0ac1d865db2575791db SHA-256: b71396c37f46c718e7d7c1d8d692d78e2e05b19bc90b311cd6d4894d74da073e
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://ttraff.club/pify?keyword=rise+of+kings+troop+guide In PDF document text
    • http://movusaziv.tornadoalleychasing.com/uploads/1/3/0/7/130739113/mafenatigo-rojupuk.pdfIn PDF document text
    • http://files.teamrehab.uk/uploads/1/3/1/4/131407849/fogasulobebetokibu.pdfIn PDF document text
    • http://files.max-besbris.com/uploads/1/3/0/8/130874634/aad9764a.pdfIn PDF document text
    • http://files.amiralapparel.com/uploads/1/3/0/7/130775639/zijosogemopazaxem.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/2859/7912/files/ssu.apk_sprint_descargar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7138/1405/files/guwewopi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8566/8255/files/ethiopian_river_basins.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9338/5633/files/79461114491.pdfIn PDF document text
    • https://5ffb6f4d-4c62-443e-8dc0-e0866ed75cfa.filesusr.com/ugd/957eb4_00e5715e433e4f97a99aaeaa87ef90d2.pdf?index=trueIn PDF document text
    • https://3728e8b7-1cb0-44f9-ad93-ad1966ec78cf.filesusr.com/ugd/85c99c_7b2afaa895e0458190589817bf3c85f3.pdf?index=trueIn PDF document text
    • https://c45a2eef-5643-4121-a1f4-2b55feddfbcf.filesusr.com/ugd/c79b1c_32cf406f6d33459baae774de232610da.pdf?index=trueIn 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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000063e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63E1 5036 bytes
SHA-256: b05e3a0976fe9ad031c977261291a782e9dd5093292a59f3d0975579f8836039
font_01_sfnt_off00007523.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7523 10320 bytes
SHA-256: 5de8971459f88a27c93aad7245002bf0995cf64cd62186a9aacb15cee2cbfecc
font_02_sfnt_off00009892.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9892 16092 bytes
SHA-256: 9af6fc3bf9d751f70540aea0fa47faa159a3604992cda23d2adcda3ffc5346b2