Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7680f1203c63ecd…

MALICIOUS

PDF

49.7 KB Created: 2020-10-27 16:16:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 0f0897cdee009ed723c16a1333010a7b SHA-1: 1e788c5349dedba65cad4d7f4bd7549fef3b24f0 SHA-256: d7680f1203c63ecdea9ae251105915de5bda170654da3fe819f7dec6c06f7346
154 Risk Score

Malware Insights

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

The PDF contains a link that redirects to known malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains the malicious URL. The PDF also functions as a link farm, pointing to numerous other PDFs, suggesting a spam or SEO-based distribution method.

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.me/123?keyword=mineral+properties+worksheet In PDF document text
    • https://zafojepomekosax.weebly.com/uploads/1/3/4/3/134352399/784526.pdfIn PDF document text
    • https://lowizozexide.weebly.com/uploads/1/3/0/7/130776176/e149b5e8d534a.pdfIn PDF document text
    • https://titawijuneve.weebly.com/uploads/1/3/4/0/134012454/3540780.pdfIn PDF document text
    • https://lejigatoni.weebly.com/uploads/1/3/1/8/131871980/xemonozapidinutixopa.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/c05b4a32-6949-4f7c-b2da-3e4a112f0050/swashbuckler_5e.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9045033-ca01-46ce-bb6d-836d5a3d2239/13201927460.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e5ff9d9-73d0-4936-b8cf-d59fb8f42c73/70260867958.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2307d85-cae4-4f35-8785-4e9d92a4bb49/78406524095.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a82d9e9e-2d88-48c2-a790-33ef3c953d22/tupokafejik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/2503/4148/files/realidades_1_capitulo_8a_answers_page_142.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/2360/6175/files/whatsapp_backup_restore_from_android_to_ios.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0592/6809/files/4188730443.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/2028/7639/files/law_and_order_forehead_guy_name.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9594/0503/files/hogwarts_mystery_apk_mod_1.6.1.pdfIn PDF document text
    • https://s3.amazonaws.com/davolazupivowi/59126994133.pdfIn PDF document text
    • https://s3.amazonaws.com/gidibesuxi/52153765092.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d18462f-cb69-4ce1-938a-706c5faf9a20/47710746642.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ddfce09-ab6f-4527-ad77-ae36cb35276e/taxizijipuk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f3969e0d-54de-4d64-b2de-8ea793db1e6c/lubapomutekusono.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb7e9947-bbdf-4619-87c5-fb3b81e48dde/xivavulefajinurajub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3da388d0-b5c2-4253-91b8-05f5b85ca64b/torabepotusemuf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/10e02403-682a-44d3-97f5-4a1a0d7806b2/80466810851.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b42ea47-01af-4b13-8e1b-329aa1a0d252/48238014130.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f9b5758e-3fff-4c19-a27b-ef18445e82c9/gewinibifuguzus.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006ba4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BA4 5068 bytes
SHA-256: e2e902812cbeb93565fcb6bc82f50135c0a67f291c54b0220fecb0bf03e8e4e9
font_01_sfnt_off00007cea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CEA 11244 bytes
SHA-256: 4a6210b882491f3f4c0c64243cadcf64a45d8a5aac8a253c7f513f3c931a71ce
font_02_sfnt_off0000a3a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA3A9 16112 bytes
SHA-256: 275d0ef8f619a30f75d5b67021c85ffe51dbf44d82a44ecb2d07128ff93f9399