Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c490e1f62877346…

MALICIOUS

PDF

79.6 KB Created: 2021-03-22 16:39:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6c8720466673c9cf3ca8f0bfac44d4ed SHA-1: 12b0f4f01948457c86eba7c18e1a1e323e1dd866 SHA-256: 1c490e1f62877346200739c21c0aaed1365c2bc3a249c47d29ec72cbebe76fed
96 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with a primary malicious URL identified as 'https://maypoin.ru/wix?keyword=liger+enail+for+sale'. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting a link farm or SEO manipulation tactic. The ML classifier strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the structure and embedded URLs point towards a malicious document designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 4

  • 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.
  • 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=liger+enail+for+sale
    • http://indital.space/xenoblade_2_heart_to_heartxb4yr.pdf
    • http://takovevagagiv.scienceontheweb.net/cetoconazol_betametasona_neomicina_bula.pdf
    • http://csxmoney.info/68253970680lsbjy.pdf
    • http://gelchlen.fun/lajigitimodojobo805fz.pdf
    • http://xisumagogali.getenjoyment.net/vacuna_varicela_pediatria.pdf
    • http://mbfsopg.com/intermediate_accounting_ifrs_solution_manualhkj1n.pdf
    • https://cdn-cms.f-static.net/uploads/4380384/normal_5fd0c1a7a4914.pdf
    • http://rusherx.studio/nss_eski_srm_indiramb64.pdf
    • https://static.s123-cdn-static.com/uploads/4503214/normal_5fcf2ed36af83.pdf
    • http://leninuludobodu.mygamesonline.org/surikazisunelenu.pdf
    • https://tuwoganerolet.weebly.com/uploads/1/3/4/6/134631505/2380311.pdf
    • http://mimivamefigupe.sportsontheweb.net/sudizokifukudefudesezezo.pdf
    • https://cdn-cms.f-static.net/uploads/4384832/normal_600d1cb5d568f.pdf
    • https://cdn-cms.f-static.net/uploads/4486200/normal_60465b9a0aa71.pdf
    • https://xuwosanilenerev.weebly.com/uploads/1/3/4/9/134900173/deretoweta.pdf
    • https://xiwabedosebu.weebly.com/uploads/1/3/1/3/131398066/zazupimiwakanetuxi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/kifutizijebuj/wimpy_kid_book_2021.pdf
    • http://mewabetowa.myartsonline.com/jigis.pdf
    • https://s3.amazonaws.com/woneketelak/49544101010.pdf
    • https://s3.amazonaws.com/zodererezuzuxi/sekonic_l-308s-u_review.pdf
    • https://s3.amazonaws.com/kasuwevovog/boloziduwikimaliw.pdf
    • https://uploads.strikinglycdn.com/files/47ffdd04-8865-4139-b4a9-a7a5133e5da6/massey_ferguson_165_for_sale_canada.pdf
    • https://s3.amazonaws.com/jasipefulaxiduj/kannada_handwriting_practice_worksheets.pdf
    • https://uploads.strikinglycdn.com/files/ada86542-9c3a-46d0-98f2-5061020eb8cf/xetosozogupo.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_off0000f9f2.bin
1d32eef75bf45c6f55cf45dad297a9abf72622bc5e67cc047e8b95ab4e7fb07f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF9F2 4876 bytes
font_01_sfnt_off00010aa6.bin
bc281605e2dbbd033c5cdd0a060549ac739ee49234e5c61f239d3d007421203d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10AA6 11428 bytes

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