Malicious PDF — malware analysis report

Static analysis result for SHA-256 72b1e185abd9562a…

MALICIOUS

PDF

82.9 KB Created: 2021-09-19 22:20:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-28
MD5: 43c15df091e035326119d6eaad8a5655 SHA-1: fe36e872003cf0a553f64ebd339a51fa54a1978b SHA-256: 72b1e185abd9562a41cb361559e18e1294afc763967630d82821b8192e354fb5
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.gdchgs.com/admin/img/files/58540249269.pdf In PDF document text
    • http://spreewaldpension-luebben.de/meineBilderAlbertGrundschule/file/gibite.pdfIn PDF document text
    • http://kyea.org/imageuploads/sirunuke.pdfIn PDF document text
    • http://sjar-tech.com/uploadfile/file///2021091622575418.pdfIn PDF document text
    • http://daydreamspin.com/userfiles/file/zavosiworeja.pdfIn PDF document text
    • https://htfcompact.com/wp-content/plugins/super-forms/uploads/php/files/917a911b144df42a33bcd4480f87acc6/33988649920.pdfIn PDF document text
    • https://kidneystonetreatment.in/userfiles/files/26537053984.pdfIn PDF document text
    • https://realwebguys.com/wp-content/plugins/formcraft/file-upload/server/content/files/16130cbf64f40a---4796703164.pdfIn PDF document text
    • http://www.iamgoingto1996.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613bb51fdc571---mipovexenudesexig.pdfIn PDF document text
    • http://www.sospapa24.com/lib/ckfinder/imgupload/files/gorofu.pdfIn PDF document text
    • https://www.ijestr.com/ckfinder/userfiles/files/31166625372.pdfIn PDF document text
    • http://xn--80aaa1acmiejxr6d7fg.xn--p1ai/data/files/fuzaluxanofitedere.pdfIn PDF document text
    • http://epoptavky.com/is/images/FCKeditor/File/wixotokovitozolusakib.pdfIn PDF document text
    • https://majubesar.org/contents/files/zonorovimurilan.pdfIn PDF document text
    • http://njxinbell.com/upload/files/sikevuw.pdfIn PDF document text
    • https://www.premiumtrade.ro/ckfinder/userfiles/files/19681383556.pdfIn PDF document text
    • https://aryaayur.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613460fd466a2---60007646209.pdfIn PDF document text
    • http://kfoodntea.com/dataroom/file/tonidewojotapeganojus.pdfIn PDF document text
    • https://backcountryplayground.com/wp-content/plugins/super-forms/uploads/php/files/e18bacc45ed668e00f331c88918c1a85/torof.pdfIn PDF document text
    • http://baharemadinah.com/wp-content/plugins/formcraft/file-upload/server/content/files/16146100095c7f---46764636276.pdfIn PDF document text
    • https://ateliersmq.com/pevron/www/img/file/jubavotedisaj.pdfIn PDF document text
    • https://playworkspartnership.ca/sites/default/files/file/wubugagonifalazov.pdfIn PDF document text
    • http://dambi.pl/userfiles/file/fedupojobenobogubosus.pdfIn PDF document text
    • http://stkvn.ru/wp-content/plugins/super-forms/uploads/php/files/dfa3ccb3903d17d8e2d40a77da5efd35/94431671160.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=watch+the+owl+house+online+freePDF 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_off0000e008.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE008 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f81a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF81A 17504 bytes
SHA-256: ad552643bf11b44aaaf11552c968e6a2b1dce5de2a6ec07e55599e70b631d7ae
font_02_sfnt_off000125b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x125B9 10612 bytes
SHA-256: fa9371eafc399a49840acf9dfecbd82deef2ff5f912332451a812118ad8f9452