Malicious PDF — malware analysis report

Static analysis result for SHA-256 72ba41628cd0e1ed…

MALICIOUS

PDF

38.3 KB Created: 2020-10-28 09:58:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-28
MD5: 9028d5c69ebb85117873f4e031cc9adc SHA-1: 5088913acb59ad5aa2cf553f3711581b1e1659a3 SHA-256: 72ba41628cd0e1ed4c8d29038b73598d10e60e365a6d41aa16cf2ac26c58928e
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/wb?keyword=coping%20with%20stress%20pdf%20download In PDF document text
    • https://cdn-cms.f-static.net/uploads/4403270/normal_5f91a5ceb8b01.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374364/normal_5f94313c9a9e6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378605/normal_5f9092fbbf57f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369149/normal_5f923008e5762.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371265/normal_5f8a655126937.pdfIn PDF document text
    • https://sokuvotaboraj.weebly.com/uploads/1/3/0/7/130776263/wasodimamex.pdfIn PDF document text
    • https://tubenuluni.weebly.com/uploads/1/3/1/4/131437864/910fbe39522d4c0.pdfIn PDF document text
    • https://jilukixewe.weebly.com/uploads/1/3/4/0/134042659/fosiluxika.pdfIn PDF document text
    • https://waxalema.weebly.com/uploads/1/3/4/3/134364729/2443079.pdfIn PDF document text
    • https://papunagaku.weebly.com/uploads/1/3/1/3/131384156/d1eb6e57648.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383327/normal_5f8c82f1d2534.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372723/normal_5f8a5ea8b0412.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386606/normal_5f98cf71669dc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369152/normal_5f884d996e9b5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379359/normal_5f91237bc533b.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/ecbd383f-89df-4928-b4a2-6f5daad0c5e4/54925284052.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb83def8-b5d4-4209-9543-42add1853170/66922925588.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ded8221a-48cf-48c5-8f23-b2c5ef911a89/pofixas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a12bef1-a955-4f6e-ae2f-08e7b57ea1ae/noderadi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5cdbcdce-7ca5-4d82-a27e-38b5c12fc60c/mivitema.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/8199/7717/files/45029137.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/1070/6619/files/wobagipizavavorofipopava.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3547/4590/files/65987428155.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/3237/5207/files/wuzimatotip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2639/0946/files/85771503377.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/13f0914d-e695-4b38-aa53-5d42b5b80f96/zuralovat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/055f42b7-63fe-47ac-9883-ac1cdae08d8b/millers_falls_miter_box_history.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_off000057a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57A0 5300 bytes
SHA-256: 71deb1259e40d42a7a6d27c8789491df37241c740c5e382939bea8738642a01d
font_01_sfnt_off000069b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69B0 9872 bytes
SHA-256: cec90792205729f7e35120df546d797bafb1fc26071fb5509521ef43fc9776b5