Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7a201105075566a…

MALICIOUS

PDF

72.3 KB Created: 2020-11-23 23:13:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 7973af78f86ee138efe12054483fb0a5 SHA-1: d292a418496f0779981f7874d50e799a9b51e856 SHA-256: e7a201105075566a991550d90de195d5348e2e996ffdaad27d2a2f52dfb77658
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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://traffine.ru/123?utm_term=stuart+mcgill+back+mechanic+pdf PDF link annotation
    • https://wajiresejepo.weebly.com/uploads/1/3/0/7/130774962/6924245.pdfIn PDF document text
    • https://sulidisige.weebly.com/uploads/1/3/4/3/134318683/7d53b371.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426090/normal_5fba953a07f38.pdfIn PDF document text
    • https://wefejakero.weebly.com/uploads/1/3/0/8/130814310/migevediludatarod.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380675/normal_5f907a1e5c5e3.pdfIn PDF document text
    • https://bavejojonosepes.weebly.com/uploads/1/3/1/3/131380601/7ee04bad317b2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369771/normal_5f8db08dd3631.pdfIn PDF document text
    • https://rogidalot.weebly.com/uploads/1/3/1/6/131636841/junukijidofonegitate.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/c3b516d2-ee00-46c7-bd5e-889805ee77e9/xozomarirepapomuladutite.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8529e320-0fb3-44b8-a113-1941e83f60f1/indian_river_clerk_of_court_recording.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8af74f39-e6da-4bc0-883e-816178bc1617/50885785856.pdfIn PDF document text
    • https://s3.amazonaws.com/xetasif/ibm_showcase_9_query_user_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/wupiwupiwot/powul.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_off0000cec4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEC4 5472 bytes
SHA-256: 4852f3d473c897577c4b9c267a9e77b196914decdfa8300eccfee213a9fa38a5
font_01_sfnt_off0000e12b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE12B 11096 bytes
SHA-256: ba046c4f590e7b6b9f91aaa92efe08eab09e897bf2346bd2f92f866e08ea9d8c
font_02_sfnt_off00010640.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10640 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

Open this report in the interactive analyzer, or submit your own file for analysis.