Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1772b8d0951ff8a…

MALICIOUS

PDF

41.7 KB Created: 2020-10-22 09:41:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 63581ef3f4eaaf9877a4f859cbfe49d3 SHA-1: 7fbefefeb56b4bd8f2f953f32e89210c2b71d807 SHA-256: b1772b8d0951ff8a5664e32884f10f168a18a3f4275108d43de9a8cf6cfd875a
184 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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=primavera+risk+analysis+training+manual In PDF document text
    • https://wefamojugibe.weebly.com/uploads/1/3/1/1/131164519/pisomezot-wojajamonaba.pdfIn PDF document text
    • https://tarirubawapub.weebly.com/uploads/1/3/1/6/131606173/8083539.pdfIn PDF document text
    • https://fotejisatowonu.weebly.com/uploads/1/3/2/3/132302873/5011230.pdfIn PDF document text
    • https://fawefugixizim.weebly.com/uploads/1/3/1/3/131383791/353343.pdfIn PDF document text
    • https://rosuxemu.weebly.com/uploads/1/3/0/7/130776582/luxuvuditowi.pdfIn PDF document text
    • https://xanodupujariris.weebly.com/uploads/1/3/0/9/130969381/buzidu.pdfIn PDF document text
    • https://pevinuwipe.weebly.com/uploads/1/3/0/8/130873962/7533635.pdfIn PDF document text
    • https://dufevirefat.weebly.com/uploads/1/3/1/4/131438490/5942461.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367312/normal_5f8ccf053836d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373519/normal_5f8ac7a68711b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366388/normal_5f871823bb92e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381095/normal_5f8d3fb1ce736.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/aec46810-4f16-458c-8b6a-ccc09bc367bd/3021393829.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a7637be-5e6a-4eb1-ba58-eefaae4c0c15/15270442028.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6aab9054-6db0-4f95-bdcf-b0bff4de3521/xowebaresorararerozede.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a741fe9e-a73b-43e0-adb2-c3c4ac9e61cc/11060054601.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/74e17cf6-44f0-4c45-aaad-927e5e92a627/67852797624.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/5010/6532/files/27476223908.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/5281/2456/files/the_village_season_1_episode_10_recap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/4682/1799/files/tug_the_table_unblocked_76.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3459/7784/files/treman_state_park_gorge_trail.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d8bb3b0-1a76-49b9-8c1a-b44fc9009453/bodopijuxepulaxagojobuvis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f7f9f85-d7bc-484d-b7cc-4fc407fe4aee/latezukesotirixonobozewid.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_off0000643e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x643E 5232 bytes
SHA-256: e58bb1aff6d768d5c6ce7b102e7d06c49def689db4f9613662ad43da09dbe019
font_01_sfnt_off000075fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75FD 10412 bytes
SHA-256: cd421e37fb62d2f1b5fdd206e1a905afca58680071fe405a53fffaa1b905b0af

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