Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2ba6c7c258b4ab1…

MALICIOUS

PDF

40.2 KB Created: 2020-10-12 08:05:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 56d5d01c6263527b76c84079b552daf6 SHA-1: 2b6fdbd3bb267d9471b6afdb66f30430f8eb2109 SHA-256: f2ba6c7c258b4ab15f53df1ef53373586fb8a2bbd8cf44abcc59786a98915bc7
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/strik?keyword=pantum+2502w+driver In PDF document text
    • http://files.randidamhansen.dk/uploads/1/3/1/4/131409037/kalefuwa.pdfIn PDF document text
    • http://files.elfinitze.com/uploads/1/3/1/3/131382248/pibig.pdfIn PDF document text
    • http://talefinij.sandiegobestpartyrentals.com/uploads/1/3/2/6/132695601/3c6d64b0752b7.pdfIn PDF document text
    • http://files.vriendenoutdoor.com/uploads/1/3/1/4/131453559/wiroj_dovanapulalar.pdfIn PDF document text
    • https://site-1036721.mozfiles.com/files/1036721/jikitizoselufuselopopawoj.pdfIn PDF document text
    • https://site-1039743.mozfiles.com/files/1039743/17577856476.pdfIn PDF document text
    • https://site-1037245.mozfiles.com/files/1037245/93793725154.pdfIn PDF document text
    • https://site-1039437.mozfiles.com/files/1039437/45877684579.pdfIn PDF document text
    • https://site-1038985.mozfiles.com/files/1038985/pagawedogabis.pdfIn PDF document text
    • https://site-1037091.mozfiles.com/files/1037091/43847971850.pdfIn PDF document text
    • https://site-1038988.mozfiles.com/files/1038988/64872683677.pdfIn PDF document text
    • https://site-1040095.mozfiles.com/files/1040095/fupofumutexisadowove.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/1/0429/1028/5990/files/63787191715.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/1367/0565/files/99387700059.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_off00005319.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5319 5312 bytes
SHA-256: 4b288d15a37e147233e4f7234b665d0d822a3c33ead01db1e263ef367b74e134
font_01_sfnt_off0000651f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x651F 2052 bytes
SHA-256: bfc0904f0f0d07b2dad5b874710802535660feb5301dd45df0a8c923e4b19bcb
font_02_sfnt_off00006dd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DD5 11136 bytes
SHA-256: cc892b37911c81333acd9da14726e397845bee41a9611be1dd182ea4ef48a22d