Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab38f47d871a853f…

MALICIOUS

PDF

51.0 KB Created: 2020-10-15 03:24:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 8db4faf2eb9a7dda545f6e3b8953b8cb SHA-1: ee7da628f1442a8e32c9805d50b88ffe8305c694 SHA-256: ab38f47d871a853f6f598ab7e06aeea8017402e2e399d3fbf69ad8df4362910d
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://cctraff.ru/strik?keyword=bushnell+engage+1300+rangefinder+manual In PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/xewuj.pdfIn PDF document text
    • https://liwevapazu.weebly.com/uploads/1/3/1/0/131071299/1af1914ad0.pdfIn PDF document text
    • https://vopevejefed.weebly.com/uploads/1/3/1/6/131606133/789683.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/8347111.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366365/normal_5f870ff1d19fe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365594/normal_5f87331d2ca30.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/wabuvavinilexe_tisipojosare_porufibavuga_laxap.pdfIn PDF document text
    • https://dapujevubo.weebly.com/uploads/1/3/1/4/131438680/4abdc26250fc54.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/dbbd04.pdfIn PDF document text
    • https://site-1036698.mozfiles.com/files/1036698/xovusubof.pdfIn PDF document text
    • https://site-1038982.mozfiles.com/files/1038982/40096270202.pdfIn PDF document text
    • https://site-1038714.mozfiles.com/files/1038714/fibezimixibuxidem.pdfIn PDF document text
    • https://site-1039132.mozfiles.com/files/1039132/wogulabilizitomejosepo.pdfIn PDF document text
    • https://site-1041779.mozfiles.com/files/1041779/ncis_la_episode_guide_2020.pdfIn PDF document text
    • https://site-1039749.mozfiles.com/files/1039749/zuzimagavuvevil.pdfIn PDF document text
    • https://site-1036716.mozfiles.com/files/1036716/judifilebokuzazixik.pdfIn PDF document text
    • https://site-1040388.mozfiles.com/files/1040388/voxivuvuvowere.pdfIn PDF document text
    • https://site-1039621.mozfiles.com/files/1039621/12789411662.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0470/6074/6408/files/stanley_fatmax_1000_not_charging.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/6080/4770/files/baucis_and_philemon_myth.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4048/9122/files/43949468499.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/2638/5576/files/fishing_planet_louisiana_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/6012/0737/files/spy_gear_toys_laser.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_off000080f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80F0 5728 bytes
SHA-256: 4af3b4b036481caff66bf9e477556b980f0913dd582da4e0fdb735815f927f23
font_01_sfnt_off0000943b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x943B 13184 bytes
SHA-256: e81d7b94982fd676a88caa5d4211866c423e878e235c709fa7db0518de41cc2b

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