Malicious PDF — malware analysis report

Static analysis result for SHA-256 10a2a7dd164eb328…

MALICIOUS

PDF

81.6 KB Created: 2021-09-13 07:30:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: cc0ee4d77ea26b2cd78c233483a7a9c7 SHA-1: 45b2a6137e207d59ace95c5572dcdaf331dc80e0 SHA-256: 10a2a7dd164eb328e06454c26a38d3a39fda6c01c5eaa9d693f386cf733300c8
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains numerous embedded URLs, many of which point to files with PDF extensions, suggesting a link farm designed to redirect users to potentially harmful content. The presence of a URL with 'cashflow+game+mod+apk' in its query parameter indicates a lure for potentially unwanted or malicious software.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9972

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://watosaphotography.com/app/webroot/userfiles/files/20210903_022223.pdf In PDF document text
    • https://dgssu.com/upfolder/e/files/20210903105621.pdfIn PDF document text
    • http://www.rosabrockenhaus.ch/ckfinder/userfiles/files/42499321308.pdfIn PDF document text
    • http://scsychem.com/upload/files/logekutob.pdfIn PDF document text
    • https://htchninc.com/d/files/96177940102.pdfIn PDF document text
    • http://solarexperten.ch/fckeditor/editor/images/file/39641028128.pdfIn PDF document text
    • http://etpatatietpatata.com/userfiles/files/95983597688.pdfIn PDF document text
    • http://energy-labels.com/userfiles/file/4630769926.pdfIn PDF document text
    • http://www.impactit.in/ckfinder/userfiles/files/begunajekejatixamobus.pdfIn PDF document text
    • https://kingwrapcarspa.com/upload/files/dinavafiregaxupezol.pdfIn PDF document text
    • https://ebooksweb.net/files/file/keturizozejusakizavavaneb.pdfIn PDF document text
    • https://termokingbt.com/ckfinder/userfiles/files/vijivajijupejefavekom.pdfIn PDF document text
    • https://appvid.eus/userfiles/files/budatetiwuronekive.pdfIn PDF document text
    • http://hcstonetw.com/uploads/files/202109121843076723.pdfIn PDF document text
    • http://xperion.hu/wp-content/plugins/super-forms/uploads/php/files/2b4ea4af84c6d0af58aac0c645a87deb/16407860684.pdfIn PDF document text
    • https://balticstroy.com/uploads/files/81058513117.pdfIn PDF document text
    • https://shen-su.eu/gfx/userfiles/files/23422980363.pdfIn PDF document text
    • http://herium.net/FileData/ckfinder/files/20210903_0B2D0305B9F1F241.pdfIn PDF document text
    • http://www.yoko-ono.be/images/userfiles/file/41228090239.pdfIn PDF document text
    • https://celebicatering.com/upload/ckfinder/files/43484234757.pdfIn PDF document text
    • https://heritran.vn/uploads/news_file/munivo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=cashflow+game+mod+apkPDF 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_off0000dad6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAD6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f2e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2E8 17796 bytes
SHA-256: 31cc325ca66de99c90708c2ddfe61fc51f4c75878671ffa65d1e7ec911ddbb34
font_02_sfnt_off0001210e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1210E 10760 bytes
SHA-256: 904002145019b4c680441c745dea6ea7614dd4711c7dff75bfbdd94541587641

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