Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e9928139a3954fd…

MALICIOUS

PDF

88.2 KB Created: 2021-06-29 11:57:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: e6c667fda587b75733010b8e9fd48c17 SHA-1: 5b5214f2008b7171bde0e161c765da63e3b80200 SHA-256: 6e9928139a3954fdb87426af6ea20f88f0e1bb7ec6c4893819d3a0b4779be87b
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was flagged by a machine learning classifier and ClamAV as malicious. It contains a link farm pointing to multiple compromised websites, suggesting an attempt to distribute malware or phish for credentials. The presence of numerous links on disposable or compromised hosting indicates a likely phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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 http://kasystemofkarate.com/clients/861259/File/rolorosivososegowur.pdf In PDF document text
    • https://angkortaxiservice.com/userfiles/file/31057434737.pdfIn PDF document text
    • https://revapackers.com/wp-content/plugins/super-forms/uploads/php/files/5lkm2biguebo1uv3euge0i8afq/jupakajofedorapuwezojuba.pdfIn PDF document text
    • http://www.hotel-margherita.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076b4b3b700c---zimudoladefik.pdfIn PDF document text
    • https://www.phoenixdentalacademy.co.uk/wp-content/plugins/super-forms/uploads/php/files/4600f4c82d035fad9bac1b9dd56d9fd8/82082219169.pdfIn PDF document text
    • http://www.louthadventures.ie/wp-content/plugins/formcraft/file-upload/server/content/files/16071739890fcb---xerinerodupibofolifobavuv.pdfIn PDF document text
    • http://nuyewpilot.academy/wp-content/plugins/super-forms/uploads/php/files/ffa11fa8a5fc628101741793f434af20/vumimafudapefal.pdfIn PDF document text
    • http://aftckwt.com/uploads/file/figawalemewobazebixusuxe.pdfIn PDF document text
    • http://www.nuricomuvakfi.org/wp-content/plugins/super-forms/uploads/php/files/uktevldkh5apluopiv7fr03rf3/gobezisetelubasolatim.pdfIn PDF document text
    • https://www.sacproblemleri.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a1a3d9736ed---ronajurenem.pdfIn PDF document text
    • https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/97350e2da861148abf9d1e4997c3b735/32757071640.pdfIn PDF document text
    • https://www.lumisolar.pe/wp-content/plugins/formcraft/file-upload/server/content/files/160803ac4dfca1---31500558305.pdfIn PDF document text
    • http://churchliferesources.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a3c35104cf0---69722471298.pdfIn PDF document text
    • https://charterboatdeliverance.com/uploads/files/79862170654.pdfIn PDF document text
    • https://www.myjamaicais.com/wp-content/plugins/super-forms/uploads/php/files/129b60c3bc2ea472f1e537c410eca478/xopesejixudivamigop.pdfIn PDF document text
    • http://erkerlaender.de/wp-content/plugins/formcraft/file-upload/server/content/files/160dac7929ee85---86412894271.pdfIn PDF document text
    • https://www.electriclighting.com/wp-content/plugins/super-forms/uploads/php/files/6aefc861e2a172e838143ef0bc038d83/tewuvokamubebadufed.pdfIn PDF document text
    • http://gingerwooddesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607008ca8f5ed---44150817448.pdfIn PDF document text
    • http://www.maoles.com/wp-content/plugins/formcraft/file-upload/server/content/files/16099d933a7db4---61739114322.pdfIn PDF document text
    • http://psychoterapia-przemysl.net/img/userfiles/file/45119782343.pdfIn PDF document text
    • http://scissortailfarms.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a137f4d9810---11175318157.pdfIn PDF document text
    • http://alituncer.com/userfiles/file/27781470727.pdfIn PDF document text
    • https://yellowstonewildlife.com/5132860801.pdfIn PDF document text
    • http://multiseal.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/16075a78197ac4---88355882158.pdfIn PDF document text
    • http://www.julitolaschools.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086167602045---fepawilubefabomijovon.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=download+satisfya+song+mp3PDF link annotation
    • 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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f541.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF541 10984 bytes
SHA-256: 71a4e4e530490c4a50ddb4b8a71f4bf07a3ce037385f4124ee23569e27d6b7c8
font_01_sfnt_off00010e9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E9E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000126b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x126B0 17096 bytes
SHA-256: 16defe116230d4b320283d0349af67e3e9d8041303b45c50d0d74fd777c18074

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