Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c0988a46981d75d…

MALICIOUS

PDF

74.6 KB Created: 2021-03-29 09:57:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d7ee5149d2fcaa351873091bcfcd26e6 SHA-1: 9d1a8aee7c187fbdd2231ebf327900bf4af4fca3 SHA-256: 3c0988a46981d75d8dc3a9db8d5f9dc2f648f57b1c95f036e07d802da2c683a3
164 Risk Score

Malware Insights

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

The PDF file is classified as malicious by ML and ClamAV, and contains numerous external links, suggesting a link farm or phishing attempt. The document body, though heavily obfuscated, appears to reference a Dometic fridge manual, likely a lure. The presence of external URIs and the overall structure indicate an attempt to redirect users to malicious content, potentially for further exploitation or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

Heuristics 6

  • 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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://mezovuduw.ru/wix?keyword=dometic+3+way+fridge+rm2553+manual
    • https://cdn.sqhk.co/safovokon/f8QheJq/aha_atrial_fibrillation_guidelines_2017.pdf
    • http://lawexape.mygamesonline.org/nobotapawoz.pdf
    • http://tujemet.scienceontheweb.net/africa_map_political.pdf
    • http://matras-24.ru/blender_manual_2._78arof3.pdf
    • https://cdn.sqhk.co/pixisuja/gezkjhE/86818007789.pdf
    • https://cdn.sqhk.co/velomegu/ibjihfL/my_lg_android_won_t_charge.pdf
    • http://naxuvazexipok.sportsontheweb.net/berofafexubupu.pdf
    • https://cdn.sqhk.co/fejipotegevi/ePofjbi/28471472025.pdf
    • https://cdn.sqhk.co/marelagixe/cicqLhj/scratch_for_windows_7_professional.pdf
    • http://faceit.su/how_to_build_a_weight_bench_out_of_woodef5qy.pdf
    • https://cdn.sqhk.co/wukomidekepu/gejagd4/virafugurexewisevilibiw.pdf
    • https://cdn.sqhk.co/lilapanorup/vjbhfgj/gujonupigizufujatulap.pdf
    • http://mon-compte-cmb.best/47658813997kkdji.pdf
    • https://cdn.sqhk.co/nalujujoso/jgRjfAh/tidodetusuzeno.pdf
    • https://cdn.sqhk.co/mogowepuw/jgTiege/voxuzusixavudumedevezu.pdf
    • https://cdn.sqhk.co/wodabakope/SlUlAgf/6092135153.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/kikunojulejuj/how_to_troubleshoot_a_canon_printer.pdf
    • https://s3.amazonaws.com/wusigipufuvowix/80161083333.pdf
    • https://s3.amazonaws.com/zolerazowubow/solve_polynomial_equations.pdf
    • https://3dcfbd4a-ef33-49dc-a04a-0aaf5307c30d.filesusr.com/ugd/b47706_d8e3c9b17e5e46f6991b0e0b060929c2.pdf?index=true
    • https://s3.amazonaws.com/mukut/nejefewanedowodanudugili.pdf
    • https://5b0e1d79-1acc-45ba-a965-31015372eee8.filesusr.com/ugd/67f5f7_907fa9be770345509c202594ba33c68d.pdf?index=true
    • http://xobibaga.myartsonline.com/galaxy_note_20_ultra_review_youtube.pdf
    • https://4f0754e2-f0c4-47db-826b-83042027646c.filesusr.com/ugd/7a11b0_5b72fdcbd02c42508bc38022bb91efae.pdf?index=true
    • https://1cf095b7-1d29-4152-b82c-7733cf7ba0c7.filesusr.com/ugd/c1de29_0990d5a2fc5d4e2280d0375034e8e28b.pdf?index=true
    • https://s3.amazonaws.com/saxefi/tedavanaguvudegeju.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_off0000e4eb.bin
866abe0780b03f26ed8299c97a91d2ff00925ed95dd6af36f6f52644377308a9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE4EB 5776 bytes
font_01_sfnt_off0000f8ae.bin
14992d217c301144aef7cfc5c86af7db798b85431b1ff3af098d46621b1a16c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF8AE 10536 bytes

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