Malicious PDF — malware analysis report

Static analysis result for SHA-256 065bbfefdb7a3d5b…

MALICIOUS

PDF

43.9 KB Created: 2020-10-02 17:50:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 5f0337ce34a5dd2944af174480a93ced SHA-1: cc7791ed8451f8ed565fed6cdbabbfa1af201b08 SHA-256: 065bbfefdb7a3d5b24fd09ffb4298583704c5a335191d26ce945d08d1b85c56d
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://ggtraff.ru/strik?keyword=super+monster+league+codes In PDF document text
    • https://site-1036981.mozfiles.com/files/1036981/valunadedavipa.pdfIn PDF document text
    • https://site-1037276.mozfiles.com/files/1037276/liwowikonovalamepunet.pdfIn PDF document text
    • https://site-1041292.mozfiles.com/files/1041292/13296952255.pdfIn PDF document text
    • https://site-1039564.mozfiles.com/files/1039564/31471166153.pdfIn PDF document text
    • https://site-1038586.mozfiles.com/files/1038586/satuxaxop.pdfIn PDF document text
    • http://nesobowu.artloversmovement.com/uploads/1/3/1/3/131379117/2648161.pdfIn PDF document text
    • http://nileni.skiingisbelieving.org/uploads/1/3/1/4/131438379/f90573.pdfIn PDF document text
    • http://pisiwa.todikong.com/uploads/1/3/0/8/130874422/1318624.pdfIn PDF document text
    • http://files.wcgme.com/uploads/1/3/0/8/130813134/gawemixojamumofador.pdfIn PDF document text
    • http://kadoxapom.rochellesteder.com/uploads/1/3/2/8/132815916/pitelidogosopof-zupasaxatodefow.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/a9769270-f120-4b7c-8d7b-0dc8b04fe873/jidunaxuzavemadefov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/918eb3ae-b356-4f5b-baf6-086996a826b7/76723833886.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bcdf5912-7ca6-4081-96cd-c35bbbb34396/85503508377.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9dc0e195-150b-4ab1-acc5-18810c612ffd/waneg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/97ae83fb-6686-43e8-a1f0-bcb44ec466cd/24821451786.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7054544f-2dad-447b-a1e1-8d92cef66b9e/rupivemolo.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000602e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x602E 5328 bytes
SHA-256: f276a2b0a951b3ae18b51be433d4381cebc7fd7901532fd3f75479a9c2fa33f3
font_01_sfnt_off00007226.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7226 10148 bytes
SHA-256: a0b7dda5564204209edf1f9d2c72cd89368f65b77161aa580594481c33c6f4c2
font_02_sfnt_off000094d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94D1 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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