Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bd43ee9d5629e46…

MALICIOUS

PDF

88.8 KB Created: 2021-03-19 13:43:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 58571c1a412ba57f326ccd4d64983732 SHA-1: 59f3cac2f87bc8ef57af9e519eeaae1e23af36d9 SHA-256: 0bd43ee9d5629e464b0ec9cb63abffbe7c1e6e419439507841f84544ef4ea8e2
66 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, identified as a link farm on disposable hosting. The ML classifier strongly indicates maliciousness. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • 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://ponafet.ru/wix?keyword=caesar+cipher+worksheet+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4530910/normal_60119a58bf5c9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463807/normal_5fed59a6824d5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411245/normal_5fe5e89e6d952.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468530/normal_601a37f81e417.pdfIn PDF document text
    • http://ulekschool.online/37326541270d3gf8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459466/normal_5feec439cd375.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451750/normal_5fc9936234d03.pdfIn PDF document text
    • http://theraisins.pro/811455219745ykur.pdfIn PDF document text
    • http://rawoxaxevog.mygamesonline.org/how_do_you_draw_out_an_infection_in_your_finger.pdfIn PDF document text
    • http://idealicaitaly-ufficiale.site/is_200_series_neopostqprvm.pdfIn PDF document text
    • http://waferaboteb.mypressonline.com/44054979088.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/b214c490-faef-4fc4-9b16-4bae8bf8a0d0/mortal_instruments_city_of_bones_full_cast.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/376a6e51-5d13-4ad9-a3bc-d78c2fe4638d/tipos_de_comunicacion_no_verbal_iconica.pdfIn PDF document text
    • http://leparitupoxow.onlinewebshop.net/rodaraka.pdfIn PDF document text
    • http://mojogoralil.onlinewebshop.net/alimentatia_in_sarcina.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2eff362-babe-4fb7-8cd2-9ae67d1791fb/pentair_easy_touch_water_temperature_sensor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88041993-4e82-4906-bd9e-9b5f8138bf4c/26705636366.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/31530734-0652-493c-992d-299be4df9ee1/lanuvadasekatifowiteva.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ced74d0e-6b51-43d2-8c51-0b41160398b2/78892854369.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_off00010a37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A37 5048 bytes
SHA-256: b55a934b152485a365cab60c8373fbc518708e2d49ead0cd7f2e0bb5134412bb
font_01_sfnt_off00011b6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B6E 10916 bytes
SHA-256: a9fd420397c4c548a3eb2a37298b27dfcaadcfbea2a2b15cdd12f92d337aafc6
font_02_sfnt_off000140e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x140E7 16068 bytes
SHA-256: 9e1271d681207e96fe60c94df920a27091a957dc81e2614e9e6235263a34fce6

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