Malicious PDF — malware analysis report

Static analysis result for SHA-256 8253bf2da901879c…

MALICIOUS

PDF

91.8 KB Created: 2021-03-25 15:07:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 7f5196256f4db4494b71c9d3eff1b05a SHA-1: 64cb03187c9a429b9303f7edc566d09154cc531e SHA-256: 8253bf2da901879cf83a8641d01e3a5b9bc4b07919fe5b6e588697bc1f7ad669
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://druttle.ru/123?utm_term=behringer+x32+producer+full+manual PDF link annotation
    • https://cdn.sqhk.co/bisegepamitu/hj3jgih/55224792409.pdfIn PDF document text
    • https://cdn.sqhk.co/zurajekiviw/SgdCqic/pce._emu_free.pdfIn PDF document text
    • https://cdn.sqhk.co/tupujokuz/BBPmgel/sanalixuzenaligoxik.pdfIn PDF document text
    • http://affilateapp.online/harley-davidson_service_schedule_prices_australiahaak6.pdfIn PDF document text
    • https://cdn.sqhk.co/xalibolopov/iajbmij/touchdown_exchange_app_android.pdfIn PDF document text
    • http://ranking-se.com/standoff_meaning_in_urdu_easykn5ew.pdfIn PDF document text
    • https://cdn.sqhk.co/satukevaguka/jbgcLjf/12901346080.pdfIn PDF document text
    • https://cdn.sqhk.co/xederebat/jdXbgfr/vekudefifinoromaxemali.pdfIn PDF document text
    • https://cdn.sqhk.co/wugolekufo/hjpgehi/top_10_newspapers.pdfIn PDF document text
    • https://cdn.sqhk.co/polopomoset/jgOhfJJ/77448429166.pdfIn PDF document text
    • http://nakanilo.club/259128082449s9v1.pdfIn PDF document text
    • http://thedopemarketing.com/jojutosivewigigox1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/7782303b-46ed-4e7b-8cb9-5ab7388cfa71/watch_the_hunger_games_mockingjay_part_two_123movies.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/51dff9b3-6d6a-4acd-8c10-6504be52cc64/wewigovumaboxatixal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f57dfe38-89a1-431e-a16f-e2ce9d1fb75f/bekitodugegetatevevumogis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4e0029c-e873-49e9-a07c-5807fe9f3155/17859956456.pdfIn PDF document text
    • https://e966359d-176b-477a-9ad9-c314bea94227.filesusr.com/ugd/fa6f14_c57b3006123f4e05b14d2966e697ed22.pdf?index=trueIn PDF document text
    • https://86f5e18a-8766-4ae7-b9bf-31430b627380.filesusr.com/ugd/911c12_65cd021c12fe425aa660b4af7d6a75b8.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa0c4697-5e0e-4450-bcb8-31c359246e58/discrete_event_system_simulation_5th_edition_solution_manual.pdfIn PDF document text
    • http://vonolukover.epizy.com/adobe_audition_1._5_free_setup.pdfIn PDF document text
    • https://93dbb2ad-f1e8-4c6c-adfd-2ef134399473.filesusr.com/ugd/df4650_c36de8edcc874ab9b4b6e643c660f18a.pdf?index=trueIn PDF document text
    • http://todazanimidut.epizy.com/50465203299.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001170f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1170F 5604 bytes
SHA-256: d127b318061da3be2761c6ca6be80b0ec5871ba9fcdadc8cf18bb13d9c5afed3
font_01_sfnt_off000129eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129EB 12844 bytes
SHA-256: 0ac8c16e9dee9f67cb3747a8d87c18fce3b428f9bbe06164b03178a36bbb78c9
font_02_sfnt_off000151a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x151A2 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176