Malicious PDF — malware analysis report

Static analysis result for SHA-256 c73f0cd4d7e92fdf…

MALICIOUS

PDF

72.2 KB Created: 2021-03-14 07:02:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5d2bf29cca148e7a11cc13075bc81489 SHA-1: 34e0f3f6b9912b579ae59ec76b71666e8a122027 SHA-256: c73f0cd4d7e92fdfddd5ba2e205df8ac522e18f0064b163373dff5046e9d4e51
64 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, identified as a link farm on disposable hosting. The ML classifier also flagged the PDF as malicious. While no scripts were extracted, the presence of external links suggests an attempt to redirect the user to a potentially harmful website, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8024

Heuristics 3

  • 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
  • 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://nipisod.ru/award?keyword=broadacre+city+a+new+community+plan+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4465012/normal_603d574c5cf60.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386620/normal_6007a14525cb3.pdfIn PDF document text
    • https://cdn.sqhk.co/foguwugafu/ajaie5u/bcbsil_claim_reconsideration_form.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485705/normal_601a4f6020306.pdfIn PDF document text
    • https://cdn.sqhk.co/lazaxosu/Gq3jcgf/77132962784.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4401691/normal_5fdfd8c6de20f.pdfIn PDF document text
    • https://xozanazefozi.weebly.com/uploads/1/3/0/8/130874019/51c1312.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476941/normal_6016a51dec0fc.pdfIn PDF document text
    • https://muneberixiloza.weebly.com/uploads/1/3/4/3/134339704/povijesu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470979/normal_6035f96ce6fa6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426816/normal_6045048805443.pdfIn PDF document text
    • https://cdn.sqhk.co/gixezovof/IdjjgjX/2824138505.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://f6ce3cfb-f922-470c-9e0e-eaf724001b0e.filesusr.com/ugd/defcb2_5378e09712414eaeab7ac48bb6716a2e.pdf?index=trueIn PDF document text
    • https://19508648-7f28-415f-8121-b57715dc1465.filesusr.com/ugd/9734e7_183f7a8dd92c4cfab51558800f3c1ea7.pdf?index=trueIn PDF document text
    • https://d0a6b1b1-1773-4622-8b5e-0ab5990a7ed3.filesusr.com/ugd/b90ba1_c905fe6f16b14c2f97c776dfd4bf9391.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/467b5840-aace-4af2-9a38-53c8115a935c/why_books_were_banned_in_fahrenheit_451.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f7331d0-fcf0-4d9a-90bd-9377dff41339/easy_vegan_no_bake_granola_bars.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4551954-0348-4cbc-9ceb-8d78fb091839/how_to_use_a_craftsman_staple_gun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc85a781-d3c8-42cc-a1c6-58bd9c595f01/flir_tg165_price.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a6b93ac-a6d2-4e79-b1f6-94187eee07fa/lezawadavefif.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001043d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1043D 5368 bytes
SHA-256: b90ebfb616e14dbc0b0f0245b27720c2b3a21028dff0497227a9a5c062f4a21d

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