Malicious PDF — malware analysis report

Static analysis result for SHA-256 84c80aa157448f32…

MALICIOUS

PDF

51.6 KB Created: 2020-10-17 02:13:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 389d7e72699a06b1f057bf9e8bf723df SHA-1: 0cada5b00ecff321e3002c31ccf6f8893adeb1c6 SHA-256: 84c80aa157448f3276c7e67815d4a162d47531fbc2b214963e88c2cbe30450d0
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/strik?keyword=desintegracion+de+la+urss+causas+y+consecuencias In PDF document text
    • https://kurikezexiwu.weebly.com/uploads/1/3/0/7/130775092/5911ecc07be80c3.pdfIn PDF document text
    • https://jizonuwuko.weebly.com/uploads/1/3/0/8/130814311/kowokojig_xinepelefus.pdfIn PDF document text
    • https://zuparimetusu.weebly.com/uploads/1/3/1/3/131378993/pewonisoja.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366350/normal_5f873d06d7ea8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376850/normal_5f8a0b6be15fb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365547/normal_5f892d755f554.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366036/normal_5f88756077f54.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374689/normal_5f8a0b3ccf37f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370286/normal_5f88c6e3cf2af.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366005/normal_5f86f9b4ac96e.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/1/0481/8295/2090/files/macmillan_math_grade_4_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0466/5281/7573/files/97202681148.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0506/0116/4965/files/77556357941.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/41a6bee7-d476-4755-a86e-01dfb1cf88f4/tigenomeranogisaj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6516b600-de2f-48b3-a1f8-9cc13b3060e8/16922306570.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4918c676-ec60-4edd-9841-f97668e5317d/70044564729.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a25501e2-8f5f-42c0-93e8-99b91cd9d028/foxulizanoxolituv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1cb1b9ac-6882-4923-a730-65f466de1100/6299107078.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/7903/3518/files/monash_south_africa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/3669/9555/files/wulodasi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/1671/2100/files/10_person_instant_tent.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_off000089e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89E0 5208 bytes
SHA-256: bd5cbf73077e7846842194a80eda186c84adc51578f63496ba1a4ebfaa554dc9
font_01_sfnt_off00009b9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B9F 10776 bytes
SHA-256: 463c80fd7a77deb69d13acbbf4d5793dfc7efa2fd62e8084d5e5a8bc6333bfc1

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