Malicious PDF — malware analysis report

Static analysis result for SHA-256 c69ecdbcd0bab301…

MALICIOUS

PDF

90.6 KB Created: 2020-10-27 22:51:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 803cbb47214bf8d6dc08a0b1d8c99ca9 SHA-1: 7f62554dbb066bfb387df04f0097544657267e86 SHA-256: c69ecdbcd0bab3018893dd93d66475b3e5bdc9ef4f642c6503d0637872404de0
154 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.club/123?keyword=battle+of+hogwarts+movie'. This URL is embedded within the document body, suggesting an attempt to trick users into visiting a potentially harmful site. The presence of numerous other PDF links also indicates a link farm, likely for SEO manipulation or distributing further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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=battle+of+hogwarts+movie
    • https://cdn-cms.f-static.net/uploads/4383446/normal_5f931b3579a36.pdf
    • https://cdn-cms.f-static.net/uploads/4392869/normal_5f8e7d1d1996c.pdf
    • https://cdn-cms.f-static.net/uploads/4389384/normal_5f900cd2d9ce6.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/9b0ec117-1ac2-4ecd-a781-14eb66afd2fd/96702143935.pdf
    • https://uploads.strikinglycdn.com/files/078ebe89-ea7f-47e3-acfd-f26c65d459d7/xopiwaritepunupef.pdf
    • https://uploads.strikinglycdn.com/files/ab88d32e-acb9-478f-b699-39194d82327e/46842048522.pdf
    • https://uploads.strikinglycdn.com/files/a4c7ee53-b683-49d3-9de4-afa51b8ee73d/lodetufuxokaxatugujefan.pdf
    • https://uploads.strikinglycdn.com/files/e4969f7c-2095-438d-afc6-5213f75a99a9/vojudamopofe.pdf
    • https://cdn.shopify.com/s/files/1/0468/1511/7466/files/antigeno_helicobacter_pylori_en_heces.pdf
    • https://cdn.shopify.com/s/files/1/0431/3219/0876/files/kavesagoduvaduloxok.pdf
    • https://cdn.shopify.com/s/files/1/0428/9282/0643/files/68551545951.pdf
    • https://uploads.strikinglycdn.com/files/5d0f1224-e68a-4acb-bc40-343a221872af/zowimebodobiku.pdf
    • https://uploads.strikinglycdn.com/files/789eeb3f-8aad-4741-ac9b-46ce377e6911/66110432915.pdf
    • https://uploads.strikinglycdn.com/files/d279975a-2e1d-4d61-9845-c2cfc3b1486c/6444301066.pdf
    • https://uploads.strikinglycdn.com/files/6c3b8192-5838-49f8-837a-ae784b387c8b/mizenesekeni.pdf
    • https://uploads.strikinglycdn.com/files/b18a9d24-9d5d-4f5e-b77e-37d49953bc68/32282349049.pdf
    • https://uploads.strikinglycdn.com/files/2e941846-77a9-42e6-9921-ba9ffbf1764c/fetuxas.pdf
    • https://uploads.strikinglycdn.com/files/e10eceaf-4752-4f89-a304-e2f6a0e8253a/2014_jaguar_xj.pdf
    • https://uploads.strikinglycdn.com/files/abeaa829-edb2-40e8-ac03-6ee8e3e8fba8/55179308.pdf
    • https://uploads.strikinglycdn.com/files/a21dba60-3ec4-4810-8c21-ecc883bb802e/43898582211.pdf
    • https://s3.amazonaws.com/wonoti/comment_regrouper_plusieurs_mac.pdf
    • https://s3.amazonaws.com/jeromopelurab/wukefujisubanemob.pdf
    • https://s3.amazonaws.com/purufiz/59626299622.pdf
    • https://s3.amazonaws.com/memul/46256128384.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001221c.bin
5c7ee46cb8ebedf79b5a4da4d25cc002d615c8d2e92f9741447f56347e02b39e
pdf-font-stream PDF embedded font (sfnt) at offset 0x1221C 5384 bytes
font_01_sfnt_off00013468.bin
56ceb3a06152df08e2fdd89c133fb4f2b413c83e7f331f3bfb1533e599a72496
pdf-font-stream PDF embedded font (sfnt) at offset 0x13468 11744 bytes