Malicious PDF — malware analysis report

Static analysis result for SHA-256 388847bcc6f8a8a5…

MALICIOUS

PDF

46.4 KB Created: 2020-10-13 18:47:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: e58d30f6a86d41de1aab910f07460f30 SHA-1: ce6c700f57194cfd345d59ed441139d276bb448e SHA-256: 388847bcc6f8a8a5b85bc88074087b29d9622aab79a2dd7c2c3ceedb15a9787b
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://cctraff.ru/strik?keyword=research+skill+development+pdf In PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/3731638.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/lulodegoner.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/xelikanotuzifaja.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/vigirupiruwovilav.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/vudodapazepipux_kijemomebegax_velagokotukif.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/bewoti.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/sulusilalope-jobede.pdfIn PDF document text
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/rebodi.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/691af559-5e3b-449b-9b38-6cfec2417e58/nuvivejatenoz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/333359a8-8422-421f-b81b-6af248d83dd2/roruwatukoloxasumofum.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5405ed93-363d-4214-b3f6-f22045fcb833/7253720425.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a5f1df04-ee8c-4f95-8a0c-1fbd8760d95e/31008828982.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9db62bf1-e32e-4766-8397-0d91cef192ca/89972989038.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/9704/2333/files/vtech_bluetooth_cordless_phone_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4209/4756/files/37676256684.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0460/7957/4180/files/medium_in_artwork.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4452/7525/files/salesforce_powerpoint_template.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_off00006993.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6993 5316 bytes
SHA-256: b54f03256dda93cb0166c54e6af36258695f2caefd356ddd50c4402d16d0c991
font_01_sfnt_off00007b7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B7B 10068 bytes
SHA-256: 94eb0606019a161c15d44bb28e16681189ea8039a90f3d854fdcf73303b3ba6c
font_02_sfnt_off00009de9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9DE9 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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