Malicious PDF — malware analysis report

Static analysis result for SHA-256 f75dc4d8021b0c14…

MALICIOUS

PDF

250.1 KB Created: 2021-08-05 02:06:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: bb7823e6e031468a90fabb81aaada21c SHA-1: d5197dc373a5975583b1d17e3ff0ae6b4dc6e6c9 SHA-256: f75dc4d8021b0c14c5339eb8f4360dbbd1530aaadc18eaaee075c5c0263a1e0a
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics and an ML classifier as malicious, with ClamAV identifying it as a phishing trojan. The document contains numerous links pointing to compromised WordPress sites, likely intended to host malicious content or redirect users to phishing pages. No scripts were extracted, but the presence of multiple external links suggests an attempt to direct users to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9782

Heuristics 5

  • 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.
  • 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://monacollection.ua/wp-content/plugins/super-forms/uploads/php/files/03d13457b6823d2edb4e4715427497da/42819949278.pdf In PDF document text
    • http://www.nuricomuvakfi.org/wp-content/plugins/super-forms/uploads/php/files/k1kggrgp8lv692qs3d1k2vast3/komefupasapoxote.pdfIn PDF document text
    • https://www.getfitcrew.com/wp-content/plugins/formcraft/file-upload/server/content/files/160922a504ca95---48738161947.pdfIn PDF document text
    • http://berallebags.com/UploadFiles/FCKeditor/20210724121253.pdfIn PDF document text
    • http://wypelnienia.kratex.pl/wp-content/plugins/super-forms/uploads/php/files/bef7959d0b779fd1cc687a173c5838ca/jowejagibe.pdfIn PDF document text
    • https://www.harnoordesigns.com/wp-content/plugins/super-forms/uploads/php/files/akn2b1picg73gh3nqq647b27e0/diguwur.pdfIn PDF document text
    • https://www.saammohaseb.ir/wp-content/plugins/super-forms/uploads/php/files/9419300c22616a8a739f984e35a46da2/bepalugixirosufivegitu.pdfIn PDF document text
    • https://lcd96.ru/wp-content/plugins/super-forms/uploads/php/files/3d682b717e275a17c10b335619e99656/xasenilarixumarogoge.pdfIn PDF document text
    • http://xn--80age2amlc.xn--80adxhks/pics/images/file/lejuwusekin.pdfIn PDF document text
    • https://www.dazzlingdecor.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160c10675f1870---66605059001.pdfIn PDF document text
    • http://ropesadventure.com/d/files/12368119068.pdfIn PDF document text
    • https://smartech.lv/sites/smartech/uploads/documents/files/12580515603.pdfIn PDF document text
    • https://cleaner.pl/userfiles/file/zabedetepilox.pdfIn PDF document text
    • http://kennedy-jackson.com/clients/f/f7/f78508644b517540cdb1549d93860f53/File/litubadubadekefinaramofu.pdfIn PDF document text
    • https://www.ppmcare.co.uk/wp-content/plugins/super-forms/uploads/php/files/htclsjcn65c8san8is96auqqsl/mekofibubogemeneloponufot.pdfIn PDF document text
    • https://wacee.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607f5b8fce59f---286074774.pdfIn PDF document text
    • http://pi-consulting.ch/download/viruzopexuv.pdfIn PDF document text
    • https://paklya.su/design/img/upload/file/tujefesutafelaritinidivi.pdfIn PDF document text
    • http://naasschoolofmotoring.com/fckeditor/userfiles/file/73110104432.pdfIn PDF document text
    • https://www.lightingsolutionsinc.net/wp-content/plugins/super-forms/uploads/php/files/c73a68b1873fabc5c0f1a26bf6bb95ad/lalikazikesokojuvokejimij.pdfIn PDF document text
    • http://elmiraclassiccountry.com/wp-content/plugins/super-forms/uploads/php/files/8lnvh744mdg3itnuporajbbps2/dozizizifozeg.pdfIn PDF document text
    • http://ziepniekkalns.lv/wp-content/plugins/formcraft/file-upload/server/content/files/16096bc733a569---xixamutipusoxapepal.pdfIn PDF document text
    • https://istihdamhaberleri.com/upload/ckfinder/files/10631478364.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=iturra+design+catalog+pdf+2010PDF 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000371e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x371E4 11140 bytes
SHA-256: 609852a63600797eef220500a7eba114a8ce15b2cd5a49d6a5c26df5da4eaef5
font_01_sfnt_off00038be0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x38BE0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0003a3f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3A3F2 21084 bytes
SHA-256: 745ee60b12ad29d3d20b605a8df07bd102ac7135eaae670784df2acad77e140a

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