Malicious PDF — malware analysis report

Static analysis result for SHA-256 be2074b0735e2ae8…

MALICIOUS

PDF

78.3 KB Created: 2021-09-09 04:15:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 8e22a899cdb44cabf793d7442c3d5329 SHA-1: 8811ed0032fab65eddbb121ab50ba35010a2f43c SHA-256: be2074b0735e2ae860b4c9d45b98bce74573a9974b284b01439ff8ab32582636
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 0.9958

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://keemunblacktea.cn/uploads/file/081340302954.pdf In PDF document text
    • https://skatrip.com/basefile/skatripcom/files/60462693600.pdfIn PDF document text
    • https://globaldreamindia.com/webcms/file/11509546248.pdfIn PDF document text
    • https://delphin-bau.com/ckfinder/upload/files/lavusutofexeb.pdfIn PDF document text
    • https://feltshoe.com/userfiles/file/nodasudireko.pdfIn PDF document text
    • http://metrominicabs.com/survey/userfiles/files/xelolanuziseboka.pdfIn PDF document text
    • http://xn--lv0az70cxar.tw/uploads/files/202109090638045752.pdfIn PDF document text
    • https://egc.ecrom.work/syo/files/ruzogidonobitofifokevo.pdfIn PDF document text
    • https://haysalon.com/public_html/userfiles/file/roref.pdfIn PDF document text
    • http://alltechsro.cz/files/63072340080.pdfIn PDF document text
    • http://adasbruiloften.nl/userfiles/file/baduwatuzabamasojuf.pdfIn PDF document text
    • http://janjoling.com/public/ckfinder/userfiles/files/26685679497.pdfIn PDF document text
    • https://e-room.co/userfiles/file/desixavepuluri.pdfIn PDF document text
    • http://www.maoles.com/wp-content/plugins/formcraft/file-upload/server/content/files/161394bccc2a3f---retebuludetewaxutek.pdfIn PDF document text
    • http://asesoriazabalburu.org/azaba/files/file/jibibujivanaxo.pdfIn PDF document text
    • https://phatgiaolongan.com/upload/ckupload/files/1390770074.pdfIn PDF document text
    • http://www.sunarozlem.com.tr/wp-content/plugins/super-forms/uploads/php/files/vjthfhdgo9v25kpo7nri06i374/36561045052.pdfIn PDF document text
    • http://artio.pl/files/files/21730006858.pdfIn PDF document text
    • http://chia4kids.ru/ckfinder/userfiles/files/mipoxozejejapedij.pdfIn PDF document text
    • http://marketingnews.fr/images/file/wosumozit.pdfIn PDF document text
    • http://4reality.cz/userfiles/files/duzizokojekudegibumakoko.pdfIn PDF document text
    • http://somkuthyoptika.hu/editor_up/pofalisamawatudorile.pdfIn PDF document text
    • https://y3stwk65l-mn9.com/contents/files/9899892490.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=asphalt+7+heat+apk+androidPDF 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_off0000cea9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEA9 17156 bytes
SHA-256: a2081280a5167db66dc3f6eb2046ae2df26ea344efdc55874a3744315b3e0250
font_01_sfnt_off0000fb57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB57 10612 bytes
SHA-256: 67ea76fde00ce9648481c77cd40f3020d0d9afa56f073353c7ae75e07f28049e
font_02_sfnt_off000113a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113A3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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