Malicious PDF — malware analysis report

Static analysis result for SHA-256 0353cf321136940d…

MALICIOUS

PDF

44.5 KB Created: 2020-10-07 11:57:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 39f776abbbe20f19ae38027aa480a04a SHA-1: 740b811b4f1718e165b607de0df9d762a59e6af7 SHA-256: 0353cf321136940d10dd7167f276266768664a1f3ff1e37517963a38f25efb16
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=accelerated+piano+adventures+book+1 In PDF document text
    • http://jimakili.sf-kitchen-remodeling.com/uploads/1/3/2/8/132814742/5732117.pdfIn PDF document text
    • http://files.shiningsoles.net/uploads/1/3/1/8/131856602/wuromad.pdfIn PDF document text
    • http://files.airbrushartstudio.com/uploads/1/3/0/9/130969763/5797522.pdfIn PDF document text
    • http://files.pierceschoolbrookline.org/uploads/1/3/0/7/130738658/284313.pdfIn PDF document text
    • http://files.journalistenbuero.ch/uploads/1/3/1/4/131437823/ponot_jotusodaxu_kagivuzu.pdfIn PDF document text
    • https://site-1037101.mozfiles.com/files/1037101/pizanivuzerevaf.pdfIn PDF document text
    • https://site-1040764.mozfiles.com/files/1040764/77189519669.pdfIn PDF document text
    • https://site-1042922.mozfiles.com/files/1042922/mokaluwi.pdfIn PDF document text
    • https://site-1038738.mozfiles.com/files/1038738/49121240155.pdfIn PDF document text
    • https://site-1041927.mozfiles.com/files/1041927/simamatuku.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/1/0434/8814/9654/files/33252773685.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/6913/9872/files/ipod_mini_charger_walmart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/5393/6540/files/ffxiv_racing_chocobo_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/8422/9029/files/chapter_27_the_scramble_for_africa_guided_reading_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/6035/8039/files/the_handbook_of_discourse_analysis_citation.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_off00006ff6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FF6 5372 bytes
SHA-256: f4ece5e95d848026195b323bab87f003329c2c2f334374ccdd5064c08055e38a
font_01_sfnt_off00008250.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8250 10024 bytes
SHA-256: 8c6793a5f830efc0b3a0b41fb411b38feb12ded55165663fc79a9ec15f233ada

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