Malicious PDF — malware analysis report

Static analysis result for SHA-256 d800badc536a2250…

MALICIOUS

PDF

72.8 KB Created: 2021-09-24 21:56:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 8853ffa75535553800b7fcff283aed5f SHA-1: 1ecc3851ba328856684f90ae963bf47de18b6066 SHA-256: d800badc536a22501d4826a75f3090ab7b56878b9eb2a1a60b7ebe597e3c6b14
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to compromised WordPress sites and other domains, indicating it functions as a link farm. The presence of ClamAV detection and ML classifier flagging strongly suggests malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and external links are indicative of malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9915

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 https://queure.ru/uplcv?utm_term=happymod+extreme+car+driving+simulator PDF link annotation
    • https://www.lumisolar.pe/wp-content/plugins/formcraft/file-upload/server/content/files/1613aa4f194b3f---jufonegisebugadowakobe.pdfIn PDF document text
    • https://brihat-group.com/assets/userfiles/files/70589059809.pdfIn PDF document text
    • https://jss-moms.si/upload/File/54789036588.pdfIn PDF document text
    • https://menokatea.in/ckfinder/userfiles/files/24799298710.pdfIn PDF document text
    • http://rsport.eu/yonexshop/static/file/74340263032.pdfIn PDF document text
    • http://gld-lining.com/user_img/files/nazomedabukuwofira.pdfIn PDF document text
    • http://www.holderit.com/wp-content/plugins/formcraft/file-upload/server/content/files/16144a4b8d5ca9---gikudoxadipigozim.pdfIn PDF document text
    • http://hondasushi.com/uploads/files/zekogajoji.pdfIn PDF document text
    • http://anabakorea.jp/userfiles/file/74511619451.pdfIn PDF document text
    • http://daiichigroup.net/uploads/news_file/powukakapitazozipuga.pdfIn PDF document text
    • https://kaplaitalia.it/userfiles/files/wurulufilekiselezurezaw.pdfIn PDF document text
    • http://bangdinhphucat.com/quangbasanpham/app/webroot/upload/image/files/55132624819.pdfIn PDF document text
    • http://bergfin.se/wp-content/plugins/formcraft/file-upload/server/content/files/16140d344ee9d2---tejivifakorojiw.pdfIn PDF document text
    • http://banglatalkies.com/dynamic-images/cms/file/18620516544.pdfIn PDF document text
    • http://poetische-malerei.de/web/editor/files/pawubud.pdfIn PDF document text
    • https://hantverkarenisandby.se/UserFiles/files/59163620691.pdfIn PDF document text
    • https://thefertilizergranulator.com/d/files/wulezeviwazana.pdfIn PDF document text
    • http://automsystem.com/UploadFile/file/20210906214650886.pdfIn PDF document text
    • https://www.dooleysnaturalgas.com/ckfinder/userfiles/files/zixazijoxemuzofupugiveme.pdfIn PDF document text
    • https://xlux.vn/wp-content/plugins/super-forms/uploads/php/files/9g5bk3jvbnv3gq62880vilfl92/lipudasosofiragiri.pdfIn PDF document text
    • https://thehouseconcert.com/ckfinder/userfiles/files/nobufodibi.pdfIn PDF document text
    • http://sp3siemianowice.pl/userFiles/files/13302877077.pdfIn PDF document text
    • http://ranahytta.com/ckfinder/userfiles/files/fuwavujofeli.pdfIn PDF document text
    • http://seowonbattery.com/files/fckeditor/file/70128523561471f976f774.pdfIn PDF document text
    • https://vnmmalta.com/userfiles/file/82033373063.pdfIn PDF document text
    • https://artesapanaderia.xyz/aym_image/files/38751133861.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_off0000b765.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB765 11228 bytes
SHA-256: 428cb4d5286e16212729da57db44ab2360adac51c23d95d71b516985a6f81240
font_01_sfnt_off0000d184.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD184 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000e996.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE996 16428 bytes
SHA-256: 2f9e90aafe87c4539a612ef8440f385508aa81b9a6b0cf2aeb219a5955c36af5

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