Malicious PDF — malware analysis report

Static analysis result for SHA-256 e22c784dc4e6701f…

MALICIOUS

PDF

70.1 KB Created: 2021-09-26 10:19:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 59967ca2704a69ad40f34b63fe8b404e SHA-1: 328d120b2a46d97044501182acefb420534af305 SHA-256: e22c784dc4e6701f8a70feacc9853a2ba4674951ebde4825bd938a2d7a0767b6
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file exhibits characteristics of a phishing lure, including an image-only design and clickable links pointing to external websites. Heuristics indicate it's a link farm hosted on potentially compromised CMS uploads and disposable domains, suggesting an attempt to redirect users to malicious content. While no scripts were explicitly extracted, the PDF structure and link farm behavior strongly suggest an intent to facilitate malicious redirection, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 2 text block(s), carries a click-outward action, and is only 70 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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 https://pistant.ru/uplcv?utm_term=download+f9+2021+full+movie PDF link annotation
    • http://thesecurityguardunion.ca/userfiles/files/23077067927.pdfIn PDF document text
    • http://almawred-sy.com/files/adminfiles/files/vizuweporoninisoruva.pdfIn PDF document text
    • https://clinicaabrahaoosta.com.br/ckfinder/userfiles/files/65676132411.pdfIn PDF document text
    • http://kmkonsult.cz/userfiles/file/misijefajawuludozudolud.pdfIn PDF document text
    • https://supermagnum-bg.com/userfiles/file/pobosunab.pdfIn PDF document text
    • https://inlandautorepairmurrietaca.com/wp-content/plugins/super-forms/uploads/php/files/35cd3cf0ee39f4a7a25a32ae601e83f5/lokunifimivepelupijekip.pdfIn PDF document text
    • http://cbgnfinance.com/userfiles/file/wosixaxetinomulowaf.pdfIn PDF document text
    • https://www.ibyservice.com/wp-content/plugins/super-forms/uploads/php/files/2a592b994d93a7bab98531c7930fbfab/kerejanogoruvakapupup.pdfIn PDF document text
    • http://lukoilmarine.com/ckfinder/userfiles/files/natumetumefamalemolin.pdfIn PDF document text
    • http://nhatngungoisaoxanh.com/upload/files/zaropopelomir.pdfIn PDF document text
    • https://chsins.tw/uploads/files/202109261424009946.pdfIn PDF document text
    • http://www.pantonerestauri.com/ckfinder/userfiles/files/47390630032.pdfIn PDF document text
    • https://aiwcecckolkata.org/FCKeditor/file/nevobijuloxip.pdfIn PDF document text
    • http://kondicionery-himki.ru/upload_picture/file/xosad.pdfIn PDF document text
    • http://rydelko.pl/userfiles/file/lunabujesemebig.pdfIn PDF document text
    • https://www.ibyservice.com/wp-content/plugins/super-forms/uploads/php/files/3edd0780fb83599d67e12d9431ed284d/rironidibukafa.pdfIn PDF document text
    • http://medica-brno.com/files/jodudowezufodebili.pdfIn PDF document text
    • https://sv-fin.ru/wp-content/plugins/super-forms/uploads/php/files/5d019ffbe31d7a68c0e2b1f5ea87fd13/71597014576.pdfIn PDF document text
    • https://www.hdontheroadnapoli.it/wp-content/plugins/formcraft/file-upload/server/content/files/1613d969b58a6d---fegepepozabuvevof.pdfIn PDF document text
    • http://mrpennarak.com/user_file/file/fotifuvidadekokujabud.pdfIn PDF document text
    • http://partner-support.net/user_data/userfiles/files/93275101257.pdfIn PDF document text
    • https://vnjhanoi.com/upload/files/xavugomitawij.pdfIn PDF document text
    • http://nenkin-t.com/upload_img/ck/files/jovuxixix.pdfIn PDF document text
    • http://hengtongrongshang.com/jingkelun/userfiles/files/20210917211905.pdfIn PDF document text
    • https://perleyparish.org/wp-content/plugins/super-forms/uploads/php/files/d15602b02ace62cad12254ccb39d93ba/31245814485.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://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_off0000b4b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB4B4 14536 bytes
SHA-256: c0471c1e6492cd7316e4d7ed98852e0543ba3416a65d6380a7e14f61bea02f58
font_01_sfnt_off0000d94d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD94D 10864 bytes
SHA-256: 686460701a13cf3fe07e948451c7e641eaada999718c1c9c5e19577574a630f4
font_02_sfnt_off0000f287.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF287 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.