Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d146ac07ef75ed8…

MALICIOUS

PDF

84.3 KB Created: 2021-02-13 01:03:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 8a14a82f1f9c3854b3bb32a36f43d93b SHA-1: 5ff5c823c22ff2ee50910872eb781e64226c24c3 SHA-256: 9d146ac07ef75ed8e4af4a3f787ba96caae3b7ec5c75f2e0cd87c05a4be3a314
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs pointing to suspicious domains, many of which are associated with link farms or disposable hosting, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the presence of external URIs and the nature of the heuristics point towards the document being used as a lure to redirect users to malicious sites, likely for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://bologen.ru/wix?keyword=golf+clash+wind+guide+3.0 PDF link annotation
    • http://lnstagramverifiedsbadgeform.com/positive_affirmations_quotesxkol1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386089/normal_5fe74e78ac558.pdfIn PDF document text
    • http://micrometerdigital.xyz/gta_online_tron_bikezeq5c.pdfIn PDF document text
    • http://fakts.design/mastercraft_courser_cxt_285_75r16pl7n4.pdfIn PDF document text
    • http://bettermoneytips.com/save_the_manuals_key_tagl80oy.pdfIn PDF document text
    • https://wevinavuligi.weebly.com/uploads/1/3/4/5/134505150/5599073.pdfIn PDF document text
    • http://creamwalls.online/jeep_wrangler_yj_service_manual_free_downloadc08do.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446923/normal_6001dc8ebdefc.pdfIn PDF document text
    • http://ig-soft-team.com/nba_2k20_locker_codes_my_career_clothes096gv.pdfIn PDF document text
    • http://czecheducation.space/atwater_beach_surf_reporthtqnb.pdfIn PDF document text
    • https://biwomewiwuxe.weebly.com/uploads/1/3/4/1/134131409/5217cf4.pdfIn PDF document text
    • http://laitlabs.pro/alaipayuthey_bgm_songs_in_masstamilanpucvd.pdfIn PDF document text
    • http://loberas.22web.org/attu_tamil_film_video_songs.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416500/normal_5fd3cb0dc2acb.pdfIn PDF document text
    • https://nivujetomut.weebly.com/uploads/1/3/4/7/134753784/vuzusibuvam_mugulab_musafavipi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sofiwige.rf.gd/inkling_guide_smash_bros.pdfIn PDF document text
    • http://jumuvurerurulap.rf.gd/bitlife_ribbons_guide.pdfIn 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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED46 5648 bytes
SHA-256: 81ef03c416e25d695f11a429b75626998f71b97c8fc1fd487659fa5d2e8e45d4
font_01_sfnt_off00010092.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10092 1976 bytes
SHA-256: 9a827cecdd4ccebbf0e148a81420bfe946d784ca8ce7eec8820a7795eb4bd307
font_02_sfnt_off000109d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109D3 10380 bytes
SHA-256: 86728d374778dee214c5257c52b427a66b1111195bf428d9e66d00f753d66690
font_03_sfnt_off00012d84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D84 16344 bytes
SHA-256: a85a493381ade843d516d7774ea3adaa5ad08da2a8c5403ba8293a283b0c1772

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