Malicious PDF — malware analysis report

Static analysis result for SHA-256 3280610bee029682…

MALICIOUS

PDF

81.7 KB Created: 2021-09-12 19:36:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 474eb23677aca4996a7779ee74fe1bda SHA-1: b33e98e5f039b233b0e2b35acd6c18697df7897f SHA-256: 3280610bee029682ef1db7699ed936ebf037f60ba799cc9e480042d20c11a1a1
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613c9c2f60e1d---18311639928.pdf In PDF document text
    • https://bagstyle.uz/images/file/65259021742.pdfIn PDF document text
    • http://cmuniontravel.com/userfiles/file/6597839456.pdfIn PDF document text
    • https://krainaogrodow.eu/zdjecia/fck/file/26027569045.pdfIn PDF document text
    • http://uspeh-kursk.ru/ckfinder/userfiles/files/54260844152.pdfIn PDF document text
    • https://legouic-peinture.fr/userfiles/file/vijuvifoxosajofelem.pdfIn PDF document text
    • http://euro520.net/userfiles/file/16305860582121883611.pdfIn PDF document text
    • http://berallebags.com/UploadFiles/FCKeditor/20210911033626.pdfIn PDF document text
    • http://ccadl.com/files/20210912050050.pdfIn PDF document text
    • https://emailing-online.fr/uploads/userfiles/file/18290178203.pdfIn PDF document text
    • https://careersourceokaloosawalton.com/files/public/pewogowebamofewufob.pdfIn PDF document text
    • https://atlasautoglass.com/wp-content/plugins/formcraft/file-upload/server/content/files/161336bb288b4b---50338768823.pdfIn PDF document text
    • http://refinerlink.com/userfiles/file/pazepejebejuvigusesupiduf.pdfIn PDF document text
    • http://daeryuhealthcare.com/ckupload/files/bemakebalamafojunujog.pdfIn PDF document text
    • http://ritadas.in/userfiles/file/88995591399.pdfIn PDF document text
    • http://xn--h49al33a2zdp0eo1x.com/DATA/file/20210901212144.pdfIn PDF document text
    • http://www.haztartasigepszakuzlet.hu/pics/file/72963167292.pdfIn PDF document text
    • http://harissarantis.com/userfiles/files/zebivosi.pdfIn PDF document text
    • http://xdata.pl/app/webroot/img/ckf/files/67309481403.pdfIn PDF document text
    • https://smsenerji.com/resimler/files/dasubesekonujofotezi.pdfIn PDF document text
    • https://saglamahsapkutu.com/img/editor/image/file/97660527290.pdfIn PDF document text
    • https://gobelsprofil.com/upload/files/bafudowe.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3vuEKuznOb8/uplcv?utm_term=how+to+remove+your+phone+from+safe+modePDF 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d873.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD873 18332 bytes
SHA-256: ed5b4ee308f478a12f688fd0b2ea08fc62826478c96949d309bf8c2e87336109
font_01_sfnt_off00010783.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10783 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011f9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F9A 10980 bytes
SHA-256: 4a886a1913a7b8d9c41dd347f979e93683ba76ea02deb6c7356dd20bc00325e8

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