Malicious PDF — malware analysis report

Static analysis result for SHA-256 d17aa70a9d28541c…

MALICIOUS

PDF

87.9 KB Created: 2021-09-13 08:28:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 7564e4ae6c3adc40337741eba5d62695 SHA-1: 5dafe5b5a82e179d6667c41e7f3e464577f68100 SHA-256: d17aa70a9d28541c867c2d77c5ca50cc51b9cb85da41a2c2fae2813aac91df86
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous embedded URLs, many pointing to compromised CMS uploads and disposable hosting, indicating a link farm designed for phishing or malware distribution. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were extracted, the structure and URL patterns are indicative of a phishing lure or a downloader for a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9922

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://awfiowv.love-mrt.com/upload/files/93395043974.pdf In PDF document text
    • http://pjteam.hu/uploads/gumolutak.pdfIn PDF document text
    • http://uhorder.com/upload/files/29063042640.pdfIn PDF document text
    • http://professional-tuner.at/uploaded/file/98057610547.pdfIn PDF document text
    • http://www.nisbd.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f287339d3a---43942247439.pdfIn PDF document text
    • http://jiuxingchaoshi.com/uploads/file/060133582765.pdfIn PDF document text
    • http://www.finanzanlagen-honorarberatung.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613b159587715---21603426216.pdfIn PDF document text
    • http://hairfibers24.com/upload/file/86015613496.pdfIn PDF document text
    • http://pferdefreunde-brueckenhof.de/sites/default/files/userfiles/file/xanevagug.pdfIn PDF document text
    • https://jbdclothiers.net/emailer/userfiles/file/loludisoza.pdfIn PDF document text
    • https://menu2uplus.com/images/file/kovavitunodij.pdfIn PDF document text
    • http://tuecpa.com/file_media/file_image/file/80029213020.pdfIn PDF document text
    • http://salamatekhanevadeh.ir/ckeditor/files/files/sinowu.pdfIn PDF document text
    • http://xn--9i1b14lzokxjcrti5um.com/upload/fckeditor/file/wevexediridut.pdfIn PDF document text
    • http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/basp494lhamfukuf56fv4ifup2/tujefij.pdfIn PDF document text
    • http://furnitura-syndicat.ru/ckeditor/ckfinder/core/connector/php/uploads/files/38439876903.pdfIn PDF document text
    • https://drlalashow.com/php/billboard/uploads/file/16352963709.pdfIn PDF document text
    • http://tivatijapan.com/uploads/userfiles/file/lezimovaw.pdfIn PDF document text
    • https://himalayanwanderer.com/himalayan/userfiles/files/67391657462.pdfIn PDF document text
    • http://medtravel.lv/images/hand_uploaded/files/89898608956.pdfIn PDF document text
    • http://www.aragonemprendedor.com/userfiles/files/durimikuzilowawivaje.pdfIn PDF document text
    • http://shriadinathbank.com/uploads/49897806617.pdfIn PDF document text
    • http://barrybusiness-crm.com/ressource/devis-photo/files/16970071792.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=redmi+8+support+5ghz+wifiPDF 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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c2a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2A5 2208 bytes
SHA-256: 756a1a0157972fc760d4fe451822902513d3ed9764b21e2567c8da570a611012
font_01_sfnt_off0000cc8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC8C 11268 bytes
SHA-256: cc2b30a3821e3202fe3e989978c2aa559ad5b202b9b17c367facfd4419b244ec
font_02_sfnt_off0000e6f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6F4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off0000ff05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF05 16208 bytes
SHA-256: ab93ea953cd73bd5c1b6b1e20ecea8dc94c1f6ccf43145c9f97a19e4345a10f6
font_04_sfnt_off000114d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114D7 23876 bytes
SHA-256: cb65d1e545bc34a0c008ae1b5825ef7eb12f91199d99e86724c8864cf40e5d2b

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