Malicious PDF — malware analysis report

Static analysis result for SHA-256 88a8c1bbca7c0163…

MALICIOUS

PDF

94.9 KB Created: 2021-06-02 23:52:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8bc757524707814d09980aa7a6e9ec74 SHA-1: 50ee2579c88ac72417e54216e4cf3508a8f03d4f SHA-256: 88a8c1bbca7c01639ac17ee037fef289376cda014185fe35aed70bb79ab70a4d
126 Risk Score

Malware Insights

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

The PDF file contains a heuristic indicating it is a link farm designed to redirect users to external URLs, specifically identified as a lure for 'shawn and camila vmas performance 2019'. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. The embedded URL is the primary indicator of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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://golowaki.ru/123?utm_term=shawn+and+camila+vmas+performance+2019
    • https://static.s123-cdn-static.com/uploads/4462727/normal_5ffa64528d55b.pdf
    • https://cdn-cms.f-static.net/uploads/4483610/normal_600f537f0e252.pdf
    • https://mutakisutuw.weebly.com/uploads/1/3/4/7/134768563/xogebuf.pdf
    • https://zabuxowinuj.weebly.com/uploads/1/3/4/8/134874463/dibog_digidobedagavit_gegurun.pdf
    • https://demifezi.weebly.com/uploads/1/3/1/3/131379940/2872539.pdf
    • https://cdn-cms.f-static.net/uploads/4454575/normal_602f095fb5433.pdf
    • https://guvatezip.weebly.com/uploads/1/3/0/7/130776756/4945732.pdf
    • https://zukamukenipebo.weebly.com/uploads/1/3/1/3/131380388/rurarotatuxum-kituvezilu-fujuduri-ridedata.pdf
    • https://vebifejelib.weebly.com/uploads/1/3/0/7/130775119/paremarisusisofixoxa.pdf
    • https://kuginipa.weebly.com/uploads/1/3/4/8/134853520/465795.pdf
    • https://static.s123-cdn-static-d.com/uploads/4390659/normal_60b6f0558845f.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://vadibun.pbworks.com/f/how_do_tumours_form_gcse.pdf
    • http://doxawadar.pbworks.com/f/permutations_and_combinations_class_11_ncert.pdf
    • https://uploads.strikinglycdn.com/files/56de303f-08f1-44f7-b793-ea7a7f4f6dbf/tudofugiwelumopufapi.pdf
    • http://kipizasuzeda.pbworks.com/f/plano_de_leitura_da_bblia_em_1_ano_sbb.pdf
    • http://lakebimutep.pbworks.com/f/year_3_mental_addition_and_subtraction_worksheets.pdf
    • http://mulasamesi.pbworks.com/w/file/fetch/144506319/27099103964.pdf
    • https://uploads.strikinglycdn.com/files/fee0962c-e002-414f-98ea-ce5eb0c9a26a/o_que_colocar_no_curriculo_quando_no_se_tem_experiencia.pdf
    • http://zizovitunex.pbworks.com/f/888655624.pdf
    • http://funuvutidip.pbworks.com/w/file/fetch/144458265/46866517340.pdf
    • https://uploads.strikinglycdn.com/files/712a3291-affd-4866-9e3a-489628c4aa64/69321453455.pdf
    • https://uploads.strikinglycdn.com/files/9bd810e4-5e3c-4a5c-bff5-36b7a459dfc4/erasmus_bj_introduction_to_business_management_10th_edition_download.pdf
    • http://sijomirurefi.pbworks.com/f/dikojibixidiziv.pdf
    • https://uploads.strikinglycdn.com/files/f2024e2f-250b-4d1a-b3ea-44f6f3e2f5ea/is_keller_williams_worth_it.pdf
    • http://pijipusap.pbworks.com/f/13313602249.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000107d6.bin
f43101e678e84b2c10ade69f436e4a1418cd0db31b9a9cd8528a78b490d56d02		 pdf-font-stream PDF embedded font (sfnt) at offset 0x107D6 6132 bytes
font_01_sfnt_off00011ca0.bin
1c80c8d84c132b65880b966d034b9dace83de0c7887c2dcf106be622fa2a6c3a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11CA0 3436 bytes
font_02_sfnt_off00012a8b.bin
4303f0a22945cc7dc7e67b92e3f913569c5af1b82cf6d248e160de24a7c31372		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12A8B 13400 bytes
font_03_sfnt_off0001549f.bin
bcde0565011122eb571d7fff5634338f0a1ba791856ac3dbd4b66243a33942e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1549F 16524 bytes

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