Malicious PDF — malware analysis report

Static analysis result for SHA-256 79577c9c3e2833ee…

MALICIOUS

PDF

46.8 KB Created: 2020-08-14 02:21:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 237c92c6b9320567645408faa5eea1a5 SHA-1: 7215342df1efb2916bb7c557ba0ed0d12a737cb7 SHA-256: 79577c9c3e2833eec0d11051e739772c9ae2c07888c36c6e4501a1a8cdb55d49
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.cc/pify?keyword=google+chrome+os+for+windows+10 In PDF document text
    • http://tujuves.broncway.com/uploads/1/3/2/6/132695569/gufova-kixulizak-jotojojisiseza-temukigorota.pdfIn PDF document text
    • http://files.machajdik.com/uploads/1/3/1/3/131379671/jedabuguwanijofig.pdfIn PDF document text
    • http://files.labancamyjankins.com/uploads/1/3/0/7/130739415/bazoseremusi.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/1/0437/5068/6874/files/xilupatikizufopomelo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9896/4117/files/rasupus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0056/0805/files/42803699901.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7256/1050/files/xodekogutizewavebamanumuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5438/9665/files/75236521855.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4126/6587/files/verbal_nouns_examples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/12035000993.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4751/7341/files/bulegumoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9064/8994/files/15530165622.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13170590630.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5452/8677/files/sajijepirodixomoxifuvo.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_off000079af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79AF 5544 bytes
SHA-256: 7cac4766491c9be6a0e95a7512866f08e8b026b6cbd773f96128a4c14e1323dc
font_01_sfnt_off00008c85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C85 9940 bytes
SHA-256: f1307d9ca37754bd864f4a161f32ccba3bf68ae82f3e485771742743b7d7ccb3

Open this report in the interactive analyzer, or submit your own file for analysis.