Malicious PDF — malware analysis report

Static analysis result for SHA-256 93fae0019f339066…

MALICIOUS

PDF

48.3 KB Created: 2020-10-27 14:25:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: c2cbf03a173ea138e42f1e8e2d1c46ab SHA-1: 94abec9c6822a198a298acf46a17726214575ef3 SHA-256: 93fae0019f3390662ec67c66b2f5a127afc14f28a9301b1114a67ad23c9918a6
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=kushlan+cement+mixer+assembly In PDF document text
    • https://cdn-cms.f-static.net/uploads/4372723/normal_5f9772f57d303.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366336/normal_5f87d2b026b5e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381976/normal_5f91379d44943.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373281/normal_5f948a785c962.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/9276785.pdfIn PDF document text
    • https://mupibidegupek.weebly.com/uploads/1/3/0/8/130874042/bumux_rajovisafakol.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00007d7e.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00007d7e.bin)
    • https://uploads.strikinglycdn.com/files/ce25d8ac-5028-482c-a8c4-fec1b39e17f6/18561527267.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d142cda8-e151-449d-a006-3b652a1ba30d/tikozabuk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec51354e-f852-4c63-af00-31d0540cddd3/21366855996.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/83a010d9-ba7a-4e65-aa84-c5fea00bd8ec/mmento_police_route.pdfIn PDF document text
    • https://s3.amazonaws.com/fenatagazise/junelodikarewedad.pdfIn PDF document text
    • https://s3.amazonaws.com/putelekireza/quimica_inorganica_y_organica.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5958/2878/files/rudejibirew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/1089/0138/files/concrete_mix_design_formula.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/2431/8115/files/kitchen_closing_duties_checklist_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4429/8133/files/87440065402.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/2779/0496/files/43033083756.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37774b73-a488-418b-810d-5a94df852b57/42599689962.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9473ed84-a3de-48f6-a719-d48379dc88ba/40072127158.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4fc1d206-f094-4334-9941-ee005ed02625/jalezajaxulukiradaze.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4288d7f4-6653-4271-a6e5-c286b87f866d/fabesafupefu.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_off00007d7e.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007d7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D7E 5320 bytes
SHA-256: faa14393d0505035b9c1c8f375c783811d58b58cc284121c3680992a07571675
font_01_sfnt_off00008f60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F60 10932 bytes
SHA-256: f4a42adf67b81b85042316cfe3c383ae1f20c477f7300636f2f4546d50668342