Malicious PDF — malware analysis report

Static analysis result for SHA-256 66e68ad68ecaa3d9…

MALICIOUS

PDF

90.1 KB Created: 2021-06-26 18:10:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: e14d8c1298092fc4309a1eed16271b00 SHA-1: 958b1a6d8575c7c52271703265c5ff626016e44c SHA-256: 66e68ad68ecaa3d9e9c788410563c7755e11a292c440b85ffa8f1fee7ed92839
156 Risk Score

Malware Insights

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

The PDF contains a link farm directing users to multiple websites, many of which appear to be compromised CMS uploads. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. The presence of numerous distinct hosts and links suggests an attempt to evade detection and maximize reach.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

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://www.peopleoftheheath.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ad814bc7611---35995277009.pdf In PDF document text
    • http://www.medical-psychology.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160b0797e9b962---64522487820.pdfIn PDF document text
    • http://aftckwt.com/uploads/file/jirapitunijewifeboves.pdfIn PDF document text
    • https://www.lipfish.no/wp-content/plugins/formcraft/file-upload/server/content/files/16080f61756b93---munobogubazoxuj.pdfIn PDF document text
    • https://webmenuplus.com/images/file/xewuzavumubupopulibud.pdfIn PDF document text
    • https://mudateconmigo.cl/wp-content/plugins/super-forms/uploads/php/files/9efb67e4dfab280da5cabd13c76a48e4/fonoguluninovibazu.pdfIn PDF document text
    • https://lashmakerpro.it/wp-content/plugins/super-forms/uploads/php/files/34215uf1g0u62jp4319qksp1u4/woxaziteg.pdfIn PDF document text
    • https://www.diktu.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ae0052f902---22072761186.pdfIn PDF document text
    • https://www.penyembuhanholistikreiki.com/wp-content/plugins/formcraft/file-upload/server/content/files/160841aa3eb35b---748236015.pdfIn PDF document text
    • https://travelselection.us/wp-content/plugins/formcraft/file-upload/server/content/files/160ac5984e8144---bowipiboxudeboforijimufa.pdfIn PDF document text
    • http://plusbateria.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fae7e882c5---nojilobiw.pdfIn PDF document text
    • http://asesoriagarpe.com/wp-content/plugins/formcraft/file-upload/server/content/files/160972a9f3d2dc---divogewodujufivirabinemum.pdfIn PDF document text
    • http://nnk.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160791ad2ef938---bebagetefajezupuw.pdfIn PDF document text
    • http://xn--80aaeiengkwpz6p.xn--p1ai/pub/file/kuwonosifunikalanodad.pdfIn PDF document text
    • https://admonks.ru/wp-content/plugins/super-forms/uploads/php/files/94214b6eec40ae6a8fd5fd5e11b57d7b/ripaliw.pdfIn PDF document text
    • https://trsbarriersdirect.com/wp-content/plugins/super-forms/uploads/php/files/jnepn1hga2e8uh87vh4a551ldr/26009168758.pdfIn PDF document text
    • https://pousadamarazul.tur.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609025c33cac0---13788315250.pdfIn PDF document text
    • http://asea-admin.com/_userfiles/file/20210504200640.pdfIn PDF document text
    • https://aduanaldelvalle.com/userfiles/file/84431903318.pdfIn PDF document text
    • https://jjcfurnituremaker.com/userfiles/files/bifepabowoziruliwejufud.pdfIn PDF document text
    • https://www.wikiwebagency.it/wp-content/plugins/super-forms/uploads/php/files/b2c73e0f0d23b3d6f4c0232efa6f0d38/8549513458.pdfIn PDF document text
    • http://yatros.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160989c04dc08b---zoduwenagedakuler.pdfIn PDF document text
    • http://tlumacz-lipno.pl/pdrzewiecki/files/36488515304.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/YTWXjIUwRh0/uplcv?utm_term=nfs+most+wanted+game+download+for+androidPDF 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_off0000fe9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE9A 16812 bytes
SHA-256: 280fe061036d3d082b5ecb24f81d8d9def0c6c4620eee4755309e3a0f0d3210a
font_01_sfnt_off00012a87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A87 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001429e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1429E 10760 bytes
SHA-256: 39d23692dbe36823e72fe5a05bf68f83d18a30e2640e7409ff201feeb0f746f4

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