Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ecab977c744de0e…

MALICIOUS

PDF

190.3 KB Created: 2021-03-18 08:16:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: e82b7c1addb5f97c03de6335787f6510 SHA-1: aa7690490b31a9da66d0c8456fab6aa6b956551b SHA-256: 8ecab977c744de0e3e5b73ca660b4115abad5be2c202e8e863b375550eea3967
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable hosting services, suggesting a link farm or redirection scheme. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware delivery. The document body, though heavily obfuscated, contains a title related to Abraham Lincoln, which is likely a lure to disguise the malicious nature of the embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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 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://dugedepap.ru/strik?utm_term=what+is+president+lincoln+known+for PDF link annotation
    • https://cdn.sqhk.co/vatukaso/ifFhdgf/tiny_pig_tattoo.pdfIn PDF document text
    • https://wefupavoxed.weebly.com/uploads/1/3/2/6/132682659/06fdfd2925bef7.pdfIn PDF document text
    • https://xetutimi.weebly.com/uploads/1/3/0/9/130968997/2156c78cc4d534.pdfIn PDF document text
    • https://cdn.sqhk.co/marelagixe/iEjdzQK/11194946664.pdfIn PDF document text
    • https://zokamufonokori.weebly.com/uploads/1/3/1/1/131164159/0a33ea281304e2a.pdfIn PDF document text
    • https://gulapizebulo.weebly.com/uploads/1/3/1/0/131070336/pogikazuzenow.pdfIn PDF document text
    • https://cdn.sqhk.co/mosepoxik/d1otBZ9/keepsafe_applock_fingerprint_password_apk.pdfIn PDF document text
    • https://falibapop.weebly.com/uploads/1/3/3/9/133997194/5376597.pdfIn PDF document text
    • https://cdn.sqhk.co/xororofomed/Rh3eiir/x_shot_nerf_guns.pdfIn PDF document text
    • https://cdn.sqhk.co/kixarozikej/ghifGcr/priority_passtm_membership.pdfIn PDF document text
    • https://cdn.sqhk.co/bipokagiti/ia7iaaM/crossfire_series_book_6.pdfIn PDF document text
    • https://cdn.sqhk.co/bupitagalir/gWP3Ahf/81690350316.pdfIn PDF document text
    • https://jeluxipofike.weebly.com/uploads/1/3/4/4/134490416/4477534.pdfIn PDF document text
    • https://cdn.sqhk.co/naveropifo/im5hiNE/field_hockey_defending_skills.pdfIn PDF document text
    • https://satizuluvom.weebly.com/uploads/1/3/4/4/134481830/jamapipesi-fomobidal.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/c2a245e6-0cf3-43ff-9ad2-9ce5402344cd/how_much_oxygen_can_a_venturi_mask_deliver.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a709f47a-1e5a-4a84-95c9-045d67ec3f47/how_to_be_a_freelance_grant_writer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b536d3e-9e7a-4b54-bd32-b070df9378ae/livepuwiwejuvojatazawi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7629183c-5098-4037-82e8-fe33ddae7ef8/suxobaxuz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/249534b5-b839-47bf-a283-1cf0fd14c27e/gopoma.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63798617-f2ee-421a-835f-cdaf0427e488/mp250_how_to_scan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9fa32f9d-1d3e-4c19-8805-913af48e578a/66955068449.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_off0002b08e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B08E 5412 bytes
SHA-256: 0e95129242331467d03fa9134e9c846c1785f7cda72b3e979fcc22fc71f00f12
font_01_sfnt_off0002c30e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C30E 11960 bytes
SHA-256: d0113fb36eaaff50edbd4e0d01c5a3427c6af0ed7b1c2245a6f35ed436cff398

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