Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7100e6e8c6a4f3a…

MALICIOUS

PDF

51.0 KB Created: 2020-10-27 23:58:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 93f8a0669d8a62c2030e7b5be30f7a9a SHA-1: b36b7faa5e3bc5a216f07f78c37cae6bc6b6f89e SHA-256: f7100e6e8c6a4f3afe8792e4622d175504c3bff36a1a2d48943867b172ddb05a
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://ttraff.me/123?keyword=california+work+permit+hours In PDF document text
    • https://tupuzenetuz.weebly.com/uploads/1/3/4/5/134519332/kerijedeburusa.pdfIn PDF document text
    • https://xifobosakup.weebly.com/uploads/1/3/2/8/132815359/6456941.pdfIn PDF document text
    • https://dupizonax.weebly.com/uploads/1/3/1/3/131380343/9133006.pdfIn PDF document text
    • https://voganolov.weebly.com/uploads/1/3/4/3/134372868/dowolodevew.pdfIn PDF document text
    • https://xivenisulebitok.weebly.com/uploads/1/3/1/3/131378814/dinagu.pdfIn PDF document text
    • https://xavoxoxuda.weebly.com/uploads/1/3/1/3/131379246/faxipulitafipej_delegusisamugu.pdfIn PDF document text
    • https://fodezamu.weebly.com/uploads/1/3/1/4/131407453/e9ff54.pdfIn PDF document text
    • https://moguvikob.weebly.com/uploads/1/3/0/8/130874292/6788170.pdfIn PDF document text
    • https://suzokixuvajix.weebly.com/uploads/1/3/0/7/130776208/tefexejukumefesu.pdfIn PDF document text
    • https://ziroluberunoreg.weebly.com/uploads/1/3/4/4/134456507/5175475.pdfIn PDF document text
    • https://pepotoxuxomupav.weebly.com/uploads/1/3/1/4/131483830/56ad63a.pdfIn PDF document text
    • https://rajomiluti.weebly.com/uploads/1/3/2/6/132682989/63e6123097d7.pdfIn PDF document text
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/8c3f11ed.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/varolexexus/basic_civil_engineering_questions_for_interview.pdfIn PDF document text
    • https://s3.amazonaws.com/nijosinizo/21558793889.pdfIn PDF document text
    • https://s3.amazonaws.com/pujinit/gettysburg_address_summary.pdfIn PDF document text
    • https://s3.amazonaws.com/jeworurowam/pejetuxobedemaradeku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/7647/7632/files/barretts_esophagus_guidelines_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5074/4478/files/deditenaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/3739/1558/files/30323674709.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/9335/5416/files/jegavifipawezirupoxafubu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0477/3812/6492/files/arte_griego_antiguo.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008894.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8894 5200 bytes
SHA-256: b541d5573bae9658a9a97b56206f1f3eb564da408eb4a4e63fe2ce0e7c6160e2
font_01_sfnt_off00009a2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A2C 10764 bytes
SHA-256: 113f17c2b5a174c1cf802910da3fe5e7964cb9d5cb9f2cb7ef20ccf9096cd5bd

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