Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad0878c7411b0988…

MALICIOUS

PDF

95.5 KB Created: 2021-03-11 03:47:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: afeb1572d306bbf588b0f6ac10cde8c0 SHA-1: de4aa53f511529cdffeebfe7fd576d55a9055469 SHA-256: ad0878c7411b09889a17347adc741b92ab716a23ab2639868bfe24f6736256c7
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 domains, and a heuristic identified it as a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://seumenha.ru/award?keyword=carrom+tournament+rules+pdf PDF link annotation
    • http://phillipen.online/dunkin_donuts_frozen_matcha_latte_ingredientsf6h95.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406809/normal_602c8977bac7e.pdfIn PDF document text
    • http://tryporte.xyz/25473577221y72w5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481272/normal_6007d826196e7.pdfIn PDF document text
    • http://flash-sar.online/90181616628c4psp.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446646/normal_5fe2e4bf5ed50.pdfIn PDF document text
    • https://cdn.sqhk.co/gubogezemazo/ficzjWw/getegokoxasomujazij.pdfIn PDF document text
    • http://luminar3-download.xyz/dexotiwunijevegaf3pv9y.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413846/normal_5fcb1058b1e14.pdfIn PDF document text
    • https://cdn.sqhk.co/xenudipu/fTZjcjj/star_map_app_iphone.pdfIn PDF document text
    • http://de-bewertung-id2842384.icu/will_it_crush_diamond_hackze1ji.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482631/normal_6000a88e61406.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381740/normal_603184a036818.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388271/normal_601c9cca94e5a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444377/normal_5fd66e32758b9.pdfIn PDF document text
    • https://cdn.sqhk.co/kofelejezem/heh9eoN/4_pics_one_movie_level_63.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://878ee1be-828d-48b9-a24a-84283cf66a1c.filesusr.com/ugd/86936c_4219ee774c11496e918886899f9d180b.pdf?index=trueIn PDF document text
    • http://mewatubaliz.epizy.com/75489880007.pdfIn PDF document text
    • https://eadb47d6-6712-4ecd-aa5a-2cdcf2d90b86.filesusr.com/ugd/c844bf_09aef3e091064e4ba62de4b7875fd575.pdf?index=trueIn PDF document text
    • http://kowewewabozete.epizy.com/how_to_draw_a_realistic_person_full_body.pdfIn PDF document text
    • http://rowomasogig.epizy.com/out_of_hiding_sheet_music_free.pdfIn PDF document text
    • http://fuzadakeju.epizy.com/39433251680.pdfIn PDF document text
    • https://11f44e1d-c86f-4be6-baa1-90970e7c24f5.filesusr.com/ugd/a298ce_778e98ef839a46e9bbfd8de4f923592e.pdf?index=trueIn PDF document text
    • https://cfecb619-c0f5-418d-ae9d-b1147643389f.filesusr.com/ugd/4cd51e_328a72cf37d4477fa81321ce5882b209.pdf?index=trueIn 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_off00013dc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13DC0 5092 bytes
SHA-256: 72408a1f8b55cb2f151eaed019e77651bd354d4e94482385155c81fbc7894dc0
font_01_sfnt_off00014ef6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14EF6 9920 bytes
SHA-256: 5cccc128dea231fafbcb4641345e99e322029e5dc129f3439d25b72f6ce728d3

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