Malicious PDF — malware analysis report

Static analysis result for SHA-256 b283407c55ca042f…

MALICIOUS

PDF

44.0 KB Created: 2020-10-05 17:43:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 7f00709f43f5f4e40d6ac3f4016574c6 SHA-1: f9cfa98c1905aa058c3207da594dece9b69b8e95 SHA-256: b283407c55ca042f02e08d410e857d22dbceedec96e767ba416c9f1fe05e81a5
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=granny+meme+template In PDF document text
    • http://zexovedur.pembrokeshirenaturalburials.co.uk/uploads/1/3/0/7/130740450/3933268.pdfIn PDF document text
    • http://files.chipperstreats.com/uploads/1/3/1/3/131379099/zexejisutiguraganus.pdfIn PDF document text
    • http://files.diasporainstitute.com/uploads/1/3/1/4/131454035/d432960c1eda19.pdfIn PDF document text
    • http://files.xinchengqiu.com/uploads/1/3/1/4/131438604/jajavud_sivifaviroxaw_kowebajabab.pdfIn PDF document text
    • http://files.streetbridgeinn.com/uploads/1/3/0/7/130776118/penoragikonun-zewinekonewipo-wifupapes.pdfIn PDF document text
    • https://site-1036819.mozfiles.com/files/1036819/laxubimoranonunewupivibiw.pdfIn PDF document text
    • https://site-1038703.mozfiles.com/files/1038703/romaguvitafi.pdfIn PDF document text
    • https://site-1038925.mozfiles.com/files/1038925/59568439586.pdfIn PDF document text
    • https://site-1043910.mozfiles.com/files/1043910/mibip.pdfIn PDF document text
    • https://site-1039162.mozfiles.com/files/1039162/86672717741.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/1/0435/5565/1743/files/tipajete.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1512/6692/files/nuxokagefasofudalafa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9353/1555/files/7029518327.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/7202/3445/files/dazesosijaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2451/5229/files/zekanewize.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/8431/1447/files/three_body_problem_movie_trailer.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007026.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7026 4920 bytes
SHA-256: 2762d8f9a87af690b92b8f0a0b3a336aff5f25045cc2c6101fe0904c42e8ca22
font_01_sfnt_off000080d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80D6 10156 bytes
SHA-256: d09fd9d08cf0741b380eefb5b7e97c51be7e516f6d4c174d2eb46b159a488a95

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