Malicious PDF — malware analysis report

Static analysis result for SHA-256 86db827a81196687…

MALICIOUS

PDF

92.1 KB Created: 2021-07-22 05:32:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: e69d2829333bfb15765e1330f1a2ac1b SHA-1: 83faeb1084a19eb373eb9dc370416696bf1e181b SHA-256: 86db827a811966879c1b9982db4327ad128875068e301fd95a35cdd895d69c55
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, with a specific detection of 'Pdf.Phishing.Trojan'. The document functions as a link farm, containing numerous URLs that point to various websites, including those hosted on compromised CMS platforms. This suggests an intent to lure users to potentially malicious sites for phishing or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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.asslar.de/downloads/61443013389.pdf In PDF document text
    • http://iideree.org/wp-content/plugins/formcraft/file-upload/server/content/files/160ab9c6d84716---kejabe.pdfIn PDF document text
    • http://akbmodel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606fc29ebcd08---piminale.pdfIn PDF document text
    • http://kythuatviet.vn/uploads/userfiles/file/rewejasubutilepadilunal.pdfIn PDF document text
    • https://jetzterstrecht.hamburg/wp-content/plugins/super-forms/uploads/php/files/jb75v8dq2cna321e7prh2qb7d8/16860129341.pdfIn PDF document text
    • http://jakpaisanestate.com/images/upload/files/94820340186.pdfIn PDF document text
    • http://caacoding.net/wp-content/plugins/formcraft/file-upload/server/content/files/160837082215c5---lapigezuzevazunexu.pdfIn PDF document text
    • http://ajarnveerapong.com/UserFiles/file/jimudusorezizusowebojevuj.pdfIn PDF document text
    • https://vishalahospitality.com/ckfinder/userfiles/files/95630311816.pdfIn PDF document text
    • https://www.lindopoint.it/wp-content/plugins/super-forms/uploads/php/files/b004ccc0079a9e683ba09a7cb616d175/69218163884.pdfIn PDF document text
    • http://vaness-sens.fr/ckfinder/userfiles/files/99057019934.pdfIn PDF document text
    • http://afgventuregroup.com/cfiles/file/woniledosudaxafodev.pdfIn PDF document text
    • http://am-assets.com/aom/magnolia/userfiles/file/51288912313.pdfIn PDF document text
    • http://subventionsbetrug.de/wp-content/plugins/super-forms/uploads/php/files/so05re6ddovjrfo32r8o0q3jve/90995736185.pdfIn PDF document text
    • https://xn--78-6kce7dfhb9dwb.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/f8a9e8208cc9aebc066f475ac41111b2/nururakifomimiwositop.pdfIn PDF document text
    • http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/rm5glv5gj43ql0rc77iqnspdt4/bedidujivezarejova.pdfIn PDF document text
    • https://textolinguisticsolutions.com/upload/editor/file/nonevad.pdfIn PDF document text
    • http://mirandatutoringcentre.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160b7b3feb6896---wabosuketi.pdfIn PDF document text
    • http://przedszkolenisko.pl/userfiles/file/11702230825.pdfIn PDF document text
    • https://takiminsahada.com/wp-content/plugins/super-forms/uploads/php/files/seqjgl9npj3m3p7nrd3a2bkf1m/84675430764.pdfIn PDF document text
    • https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bf3bb7e577.pdfIn PDF document text
    • http://beachfirebrands.com/userfiles/file/wapezupamogogukuxubujuzo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/YTWXjIUwRh0/uplcv?utm_term=the+book+thief+ending+quotesPDF 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_off0001065e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1065E 16996 bytes
SHA-256: 468a503ce282abd642c4a1160dafa09f2ba59e174755a4ad5ee9d4c80db24f0f
font_01_sfnt_off00013241.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13241 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00014a58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14A58 10764 bytes
SHA-256: 7ba42bfbebfc1192303d4b3ab36123aa32779dc4430bf909f53d209e7911d509

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