Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0269ee19ba8a801…

MALICIOUS

PDF

77.7 KB Created: 2021-09-18 11:47:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 4043efb54105cd8915b1983ad1ed707c SHA-1: eee7b7d5ab4fd1a7c54539891b7d3d441703f5bc SHA-256: d0269ee19ba8a801af2d7e8aafdb16f745c35dab516f053d1c8296edcd6a636f
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically identified as a phishing trojan. It contains numerous embedded URLs, one of which, 'https://drafthe.ru/uplcv?utm_term=open+camera+pro+apk+download', appears to be a lure for downloading an application. The presence of multiple disposable links and the nature of the primary URL suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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://drafthe.ru/uplcv?utm_term=open+camera+pro+apk+download PDF link annotation
    • http://easternhoteljeju.com/FileData/ckfinder/files/20210903_D4287DEAA59A822D.pdfIn PDF document text
    • https://cpsguffanti.com/uploads/file/povaledubiduluzisokusilel.pdfIn PDF document text
    • http://www.dnevi-sekretarjev.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1613e05cb450c6---73857907497.pdfIn PDF document text
    • https://stephan-kratt.de/data/reiterhof/userfiles/file/kizuzezaxuvibaxin.pdfIn PDF document text
    • http://ordineveterinarivenezia.eu/userfiles/files/zadazizegiwilito.pdfIn PDF document text
    • http://kovove-ploty-brany-zabradli.cz/UserFiles/File/zofojutemekexuwura.pdfIn PDF document text
    • https://autopsrus.aerovents.com/ckfinder/userfiles/files/85068658728.pdfIn PDF document text
    • https://camgloberealtor.com/userfiles/file/43069828477.pdfIn PDF document text
    • http://waetsukai.jp/system/ckfinder/userfiles/files/raniwepifules.pdfIn PDF document text
    • http://keemunblacktea.cn/uploads/file/130158052882.pdfIn PDF document text
    • http://onfireinteriors.com/userfiles/guvakasel.pdfIn PDF document text
    • http://abaj.cz/UserFiles/File/dowoxujade.pdfIn PDF document text
    • http://neoneophytou.com/ckfinder/userfiles/files/mubobotapixafenezasutufi.pdfIn PDF document text
    • http://www.jcca.co.in/wp-content/plugins/formcraft/file-upload/server/content/files/161315e8867c11---neboxuketapetaxu.pdfIn PDF document text
    • http://domosplast.hu/files/file/rerarutolaleset.pdfIn PDF document text
    • https://ipic.vn/userfiles/file/18448789500.pdfIn PDF document text
    • http://trackeg.com/en/wp-content/plugins/formcraft/file-upload/server/content/files/16144939fce141---tozemari.pdfIn PDF document text
    • http://helloslow.com/data/userfiles/files/munixas.pdfIn PDF document text
    • http://tokyo-sanritsu.com/userfiles/file/lofela.pdfIn PDF document text
    • http://evola.it/userfiles/files/87973469743.pdfIn PDF document text
    • http://wyadonline.com/userfiles/file/59757752659.pdfIn PDF document text
    • http://csc0535.com/userfiles/file/20210915213528_rjtc10.pdfIn PDF document text
    • http://reflita.lt/uploads/files/bamikixanofonal.pdfIn PDF document text
    • https://lensmam.com/userfiles/file/77567216423.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_off0000c980.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC980 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e197.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE197 10520 bytes
SHA-256: 5df20f1ea3a4e19d0ef3630365425fd5317e25e1592ed66ba9adba142222c6f3
font_02_sfnt_off0000f98b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF98B 18480 bytes
SHA-256: ab41aad9427258d5e37b310919ddd6f95978d6bf172ca4a53b2b1d16238c1d1f

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