Malicious PDF — malware analysis report

Static analysis result for SHA-256 051ed47b87504cb7…

MALICIOUS

PDF

46.2 KB Created: 2020-10-25 15:07:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: cdaf20306b25d39854c3d28decfbd148 SHA-1: bccbae01a9d27072b341439793cd3dc1e2b15544 SHA-256: 051ed47b87504cb79851833c04b13e4675e54706c3fbb7639f5bc96ab8cec6af
194 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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/aws?keyword=lal+kitab+kundli+in+hindi+pdf In PDF document text
    • https://xifobosakup.weebly.com/uploads/1/3/2/8/132815359/f3b9500db.pdfIn PDF document text
    • https://moxitasa.weebly.com/uploads/1/3/1/4/131454719/2224335.pdfIn PDF document text
    • https://xesaranit.weebly.com/uploads/1/3/2/6/132696194/wasubekafu.pdfIn PDF document text
    • https://narogigadi.weebly.com/uploads/1/3/0/8/130874066/jipazuxukijogujomof.pdfIn PDF document text
    • https://fufivivol.weebly.com/uploads/1/3/0/8/130873849/f26647d.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00007846.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00007846.bin)
    • https://s3.amazonaws.com/zuxadol/13365743456.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/92181930445.pdfIn PDF document text
    • https://s3.amazonaws.com/retisovojor/fusubiz.pdfIn PDF document text
    • https://s3.amazonaws.com/vaxebisapesi/7194895972.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0844/8920/files/fovejubowuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9607/0549/files/92401386814.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4319/1960/files/minecraft_pe_apk_download_free_0.16.2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7808/1959/files/possessive_nouns_worksheet_with_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/wusugobudo.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/vewitesux.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/lolumi.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/auriculoterapia_gratis.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/os_axiomas_de_zurique_download_gratis.pdfIn PDF document text
    • https://s3.amazonaws.com/purixifusipelid/present_perfect_already_yet_worksheet.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 extracted file (font_00_sfnt_off00007846.bin)

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_off00007846.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7846 5000 bytes
SHA-256: 06b92a67abd601f2e7ae3ae1b61dd63ab3eed656b3726cb4cba12e67e8cd7044
font_01_sfnt_off00008941.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8941 9980 bytes
SHA-256: adc4e17f7b81f5cc6d6404448860307c930f6a3db2f93c148a543bf3138f557d

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