Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7c24d125fa9a476…

MALICIOUS

PDF

46.0 KB Created: 2020-10-14 19:39:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 6cb74d18679570452f3bbcfc8c1f7fd2 SHA-1: 61bc7a6669dd005283ea035a26ba017c5e2fbd6f SHA-256: f7c24d125fa9a4768025ad7ec9d8f344e033cb4291c18fab0f362cf88a21b0a4
124 Risk Score

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 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://ggtraff.ru/123?keyword=fuzzy+rule+based+system+pdf In PDF document text
    • https://site-1036936.mozfiles.com/files/1036936/kiwodaxirajeb.pdfIn PDF document text
    • https://site-1040282.mozfiles.com/files/1040282/20738431457.pdfIn PDF document text
    • https://site-1036625.mozfiles.com/files/1036625/sibimekapudogiwefamakex.pdfIn PDF document text
    • https://site-1039150.mozfiles.com/files/1039150/pevisofefozenug.pdfIn PDF document text
    • https://site-1039002.mozfiles.com/files/1039002/zotabuxarofalodop.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365657/normal_5f86f9fd70e61.pdfIn PDF document text
    • https://site-1048454.mozfiles.com/files/1048454/13374718725.pdfIn PDF document text
    • https://site-1041927.mozfiles.com/files/1041927/silosakexelazob.pdfIn PDF document text
    • https://site-1036858.mozfiles.com/files/1036858/fulokajumogiwosu.pdfIn PDF document text
    • https://site-1036851.mozfiles.com/files/1036851/47895155367.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365600/normal_5f8702c9d0e86.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366402/normal_5f872505a4a65.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366360/normal_5f8723f6e7d0e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366354/normal_5f8713be96429.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365586/normal_5f872671e33d6.pdfIn PDF document text
    • https://tavumake.weebly.com/uploads/1/3/2/7/132740551/5117028.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/vigirupiruwovilav.pdfIn PDF document text
    • https://boguvetasitob.weebly.com/uploads/1/3/1/3/131380850/kebos.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/1515306.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/fb04458b-f098-456e-b526-6504079ebb02/gatojopufuzademudeg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80909168-38b1-4cd9-9ac0-52772d81350d/64571055691.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007286.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7286 5432 bytes
SHA-256: ca86c0a60c9bfb2576c8521fdb009cf0e67e860ddcc196c125f33db50d555915
font_01_sfnt_off000084f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84F3 11208 bytes
SHA-256: d11ee55284de56f32dc3b7d7a440db47dd02f32fc1c849cfc38d9385e7e8490d

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