Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca288304aa5e4471…

MALICIOUS

PDF

43.8 KB Created: 2020-10-28 14:12:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: dee3d6e2652167d013de4f74c57ed431 SHA-1: 281b58e91db3390d70b4903e2cbc168c707e9351 SHA-256: ca288304aa5e44714ca74e0f56fd8bf7688ed89d308fcb935aa45212fe0fe301
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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.club/123?keyword=total+gym+ultra+accessories In PDF document text
    • https://cdn-cms.f-static.net/uploads/4378846/normal_5f8b907bd5737.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369519/normal_5f8aa962a47e0.pdfIn PDF document text
    • https://mejawazur.weebly.com/uploads/1/3/4/2/134265830/8551162.pdfIn PDF document text
    • https://bakukumi.weebly.com/uploads/1/3/4/4/134437371/nanesegidenafububu.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/d894cf84-2f2d-419b-b358-fea10b5e9560/67313117548.pdfIn PDF document text
    • https://s3.amazonaws.com/jemazejodep/baking_cookies_games.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/801d353d-c156-48f0-8a23-bbf7df229305/33816153248.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/timulowufidurobi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9753401b-5b37-4f96-9df8-2122ff3570ce/85206076906.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18f2291c-7de2-432b-bc51-dcc8df3394f2/34815475702.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/670cfb62-2de6-431b-be05-391a6f6b2078/free_download_disc_heston_pt_10.pdfIn PDF document text
    • https://s3.amazonaws.com/xipavir/maharashtra_vidhan_sabha_election_2019_date_in_marathi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0dabe862-458c-4e1e-a92c-7e57dedbeae3/advanced_accounting_12th_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/turixobetuni.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d338b97d-d8d6-4a57-8e71-be5d671cabb4/xoneradafabuj.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_off00006eab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EAB 5172 bytes
SHA-256: 9d0c6d1cf8ff337de03637179d156e0741a7a81171503ff67c94c213f838d407
font_01_sfnt_off00008038.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8038 10068 bytes
SHA-256: c0802e65c197a2312ceddb52034c8663d7c0bed710e33d0b997d7639f3e1624e

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