Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e047160de880125…

MALICIOUS

PDF

78.0 KB Created: 2021-09-09 23:21:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-01
MD5: 41bd6dd5be3bd541df9b4d3d94b6b472 SHA-1: 8f73c183019c9901219596d9c61c4e7a14bb0c71 SHA-256: 9e047160de880125ebe04132f9701e9f19c2318195f6ae693672847a9f6e18ac
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 0.9953

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 https://hahapediatric.com/uploads/files/202109031351147545.pdf In PDF document text
    • http://shipsupply.ru/userfiles/files/62789496001.pdfIn PDF document text
    • https://taiwancy.com/app/webroot/userfiles/files/nigofodilukalab.pdfIn PDF document text
    • https://12shio1.com/contents/files/18190233891.pdfIn PDF document text
    • https://coastalholidayproperty.com/ckfinder/userfiles/files/foguxupigixadas.pdfIn PDF document text
    • https://sassanoproperties.com/FCKeditor/file/nudaxamutopofadu.pdfIn PDF document text
    • https://jnnjhansi.com/userfiles/file/64213284314.pdfIn PDF document text
    • https://www.colegiodesafio.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/16137adfcaedb4---juruzojotejajakezuxefub.pdfIn PDF document text
    • http://nesemlak.com/test/images/uploads/files/rifobalamefaxojaduf.pdfIn PDF document text
    • http://jujucuisine.com/userfiles/file/95989802442.pdfIn PDF document text
    • http://angelescare.com/userfiles/file/kesufazasuno.pdfIn PDF document text
    • http://www.mezmat.ru/ckfinder/userfiles/files/gixadatipuxa.pdfIn PDF document text
    • http://tuecpa.com/file_media/file_image/file/11857514024.pdfIn PDF document text
    • http://heathrowairporttaxi.website/userfiles/file/dapovozoma.pdfIn PDF document text
    • https://ww150007.linebot.net/upfile/files/20210901173646.pdfIn PDF document text
    • http://kcpsystem.com/userData/board/file/jafodukunuzani.pdfIn PDF document text
    • http://www.libroparlatolions.it/backoffice/ckfinder/userfiles/files/22368840377.pdfIn PDF document text
    • http://debeleven.net/UserFiles/File/49251848332.pdfIn PDF document text
    • http://www.trimbleexpress.sk/wp-content/plugins/formcraft/file-upload/server/content/files/16133dfb09b223---wasibizoxox.pdfIn PDF document text
    • http://laskod.hu/userfiles/file/sisadutunadulit.pdfIn PDF document text
    • https://tidaksusah.com/contents/files/1670997609.pdfIn PDF document text
    • http://around-sicily.net/userfiles/file/wezameb.pdfIn PDF document text
    • http://phyllisrubensteinlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/35826113489.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=pubg+lite+apk+download+filePDF 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_off0000ce5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE5D 16796 bytes
SHA-256: 7313b6e628bffbd85c43f9c73037dae99daad8571e3ba500049c8d6b6eaf7021
font_01_sfnt_off0000f989.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF989 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000111a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111A0 10824 bytes
SHA-256: cf9e9eda5ff33379b0997896d5c20dd70c62ce6b3c3281c289124700653108bb

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