Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f0b482a6e6d9edf…

MALICIOUS

PDF

45.3 KB Created: 2020-10-27 14:09:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 7fd50115015e29c7ee7cd3cd71d9bdeb SHA-1: cfdfc9667361579f15ab2626f7997c3ecc55ef14 SHA-256: 5f0b482a6e6d9edff10bf87b6d46971d37b3da5332c1bff1415e411b67bba925
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains a link to a known malicious redirector, ttraff.com, which is likely used to obscure the final destination. The document also contains a large number of links to other PDFs hosted on strikinglycdn.com, suggesting a link farm or SEO poisoning tactic. The ML classifier strongly indicated maliciousness, and the presence of embedded URLs points towards a phishing or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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.com/123?keyword=new+berlin+west+high+school+address In PDF document text
    • https://cdn-cms.f-static.net/uploads/4406806/normal_5f92f9b5556c7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379982/normal_5f8b9da8181d6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378404/normal_5f9649b5e6d8a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385415/normal_5f8d4bc6108aa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371505/normal_5f8e29de1ba77.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373264/normal_5f8d053835470.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369932/normal_5f885646574e7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366978/normal_5f952c96286e2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374979/normal_5f979e2d20c44.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/64d82985-e9b9-4b02-890a-4b8de3e71183/98804505635.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/742d9172-3798-42c4-bd58-4b4b0dc5caa2/69188342813.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f5d1b10b-d9c2-4744-bbb5-45ffca08f98b/filazoxonigenife.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/30ba3683-5a0f-4f1c-9fdd-5d902b37f5ef/28384100548.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c61b6d5-fa9c-489c-baa8-03b664754c89/bibovudinuvawafojukas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/489c1095-fc94-4cee-a0cd-954cf9f2ee76/2238382112.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e5bd03c-4b5f-4d85-ab53-0e8930d9f595/15194472630.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6b17e8f-3727-43dd-b74f-35058ba9ad35/diwaxeniwosap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/9359/7601/files/fusavilewes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/7741/4293/files/2020_jeep_patriot_manual_transmission_removal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/1283/8808/files/63111504130.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/chega_de_saudade_real_book.pdfIn PDF document text
    • https://s3.amazonaws.com/xipavir/arduino_breadboard_projects.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/65010101661.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_off0000714a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x714A 5404 bytes
SHA-256: 15f24bdeca49d3faa4406925a6b4f4f384bcbd61d94b98500f1894258e519309
font_01_sfnt_off000083a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83A7 10852 bytes
SHA-256: cb0c015da14cdee4329de2235193063ac5f76c1e68a505125e6c08e0b15b0b13

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