Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a2510d45b1669ed…

MALICIOUS

PDF

95.3 KB Created: 2021-03-19 07:17:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cffe144a4c6ad9efde8428a22249f33d SHA-1: 157a4d78c21e53670c91e73d908876c956edd9f9 SHA-256: 1a2510d45b1669edaa3d1526d14cb9e0979ec844b20aefca9c8c9b137ae6c766
156 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains a large number of external links, many pointing to PDF files hosted on various platforms, suggesting a link farm or redirection mechanism. The primary malicious URL identified is 'https://maypoin.ru/wix?keyword=6+meter+repeaters+uk', which likely serves as a lure or a gateway to further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://maypoin.ru/wix?keyword=6+meter+repeaters+uk
    • https://tebobasuzojipol.weebly.com/uploads/1/3/1/4/131407082/dusefarutipa.pdf
    • https://jenejipita.weebly.com/uploads/1/3/4/4/134473981/bekizo_vugokivesotaj_tufatexig_bosemikakati.pdf
    • https://paporese.weebly.com/uploads/1/3/1/0/131071113/vuribevise-kenebikanajadol-rixug-wixilugo.pdf
    • http://jujovobima.getenjoyment.net/xofizajekoderipofumutoru.pdf
    • https://cdn-cms.f-static.net/uploads/4416666/normal_6017dce4b3b55.pdf
    • https://static.s123-cdn-static.com/uploads/4483856/normal_5fdea394a45b1.pdf
    • http://tafuxasomup.getenjoyment.net/biblicamente_que_es_orar_en_el_espritu.pdf
    • https://jeporifitev.weebly.com/uploads/1/3/4/2/134265357/453618.pdf
    • https://static.s123-cdn-static.com/uploads/4368245/normal_5fc7d2ceb228b.pdf
    • http://dipunag.getenjoyment.net/how_to_use_control_solution_for_true_metrix.pdf
    • https://cdn-cms.f-static.net/uploads/4425501/normal_603a3f1fe8dee.pdf
    • https://cdn-cms.f-static.net/uploads/4410965/normal_5fe66403d248e.pdf
    • http://pofaduxiruk.getenjoyment.net/international_journal_of_medical_sciences_and_current_research_pubmed.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/13c0b243-7dc3-4331-a42e-8e020e735f55/mazedupozaxovixeg.pdf
    • https://uploads.strikinglycdn.com/files/4978db3d-a9a9-42e0-ba33-b1cddfc978a7/25236465995.pdf
    • https://uploads.strikinglycdn.com/files/7cea2480-0c48-4cbf-9d88-d30cdb23e6e1/kutuje.pdf
    • https://uploads.strikinglycdn.com/files/72516967-99ee-44d6-ab60-7cb0917b61e8/46636554349.pdf
    • https://e0bfa911-60eb-4c53-bd8d-ceec25156dfb.filesusr.com/ugd/0a052f_2da3cb06c309498da33c4691194d3f45.pdf?index=true
    • http://jubogaju.atwebpages.com/inside_al_qaeda_and_the_taliban_urdu.pdf
    • https://3b87a2b8-2d13-4e6d-acc4-cbba57692a59.filesusr.com/ugd/50988c_4a2f998d2ba24e2f9100f2ab3c07e930.pdf?index=true
    • https://uploads.strikinglycdn.com/files/c3894e9c-93f1-4078-8580-15cc6ee87a55/communist_manifesto_novel.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013738.bin
2fa53e77f5ff1e5d4b8e20317ed4318dffe4bff5e5416ea0359d64a8e365a4a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13738 5056 bytes
font_01_sfnt_off0001484c.bin
6c95450ec3dbf694e93c9a4a85a590a30c5b70378f7e8300feafbc3f50554059		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1484C 11648 bytes

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