Malicious PDF — malware analysis report

Static analysis result for SHA-256 c095b4568f29a3a3…

MALICIOUS

PDF

43.7 KB Created: 2020-10-15 06:29:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 62ac1db4ec3a90e1915c250d9c5770fb SHA-1: c9c3bcad7df44b6aad776227428de3dbae444661 SHA-256: c095b4568f29a3a3e49f2495f4e3697ea1e4bf991eaad89166752fb5adcba157
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.club/pify?keyword=simcity+buildit+mod+apk+2020+offline In PDF document text
    • https://site-1037164.mozfiles.com/files/1037164/jipofuledodan.pdfIn PDF document text
    • https://site-1043328.mozfiles.com/files/1043328/rubosoxipuduboperus.pdfIn PDF document text
    • https://site-1038969.mozfiles.com/files/1038969/tusorejugepowalem.pdfIn PDF document text
    • https://site-1040317.mozfiles.com/files/1040317/54492644406.pdfIn PDF document text
    • https://zidabowejixu.weebly.com/uploads/1/3/1/1/131163559/6932602.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/jibigamefomoni.pdfIn PDF document text
    • https://gusumadanu.weebly.com/uploads/1/3/2/6/132695601/0888efd709fa9.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/8536469.pdfIn PDF document text
    • https://waniremupamed.weebly.com/uploads/1/3/1/4/131407535/navumake_roxugod_gobikivuvitu.pdfIn PDF document text
    • https://site-1042830.mozfiles.com/files/1042830/56160765457.pdfIn PDF document text
    • https://site-1036651.mozfiles.com/files/1036651/makovajarit.pdfIn PDF document text
    • https://site-1040974.mozfiles.com/files/1040974/38486142107.pdfIn PDF document text
    • https://site-1038581.mozfiles.com/files/1038581/83826305592.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367960/normal_5f87b660a5b2e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365591/normal_5f875b85c3d9d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365659/normal_5f87019f5a819.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/1/0429/2693/2124/files/84065909277.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9655/5168/files/which_of_the_following_financial_statements_illustrates_the_accounting_equation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/7488/2198/files/luramebudanajusazi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3569/7063/files/77041668464.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce0bf1bc-71da-4e78-8bf1-693c9ccaa478/50062354814.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04fd975b-1eaf-4204-895c-6c1773d31283/sisesaveboxipesijefesupo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af55b921-1339-4d9c-9f79-a2ffd692d059/zapipifapa.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_off00006bba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BBA 5712 bytes
SHA-256: e8cd1fc5d52618ac9dcc4311e75fc41f7a57d4b63a05cb674ce502bddacc0520
font_01_sfnt_off00007f1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F1C 10012 bytes
SHA-256: ddc2c76391a7ebdd1f9ff31440f7407e3aa8f851271d6cd998a5facfd1c30b1c