Malicious PDF — malware analysis report

Static analysis result for SHA-256 7370600312a96ef7…

MALICIOUS

PDF

75.9 KB Created: 2021-09-23 06:58:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 8a1062d68113a13aaf949cb13985c45d SHA-1: 8749b010c8916113871850fe541f8c14bb64a708 SHA-256: 7370600312a96ef772ef6e7e85d6e91fe3cd9f814ae6c0bdb0b80949bf315f99
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs pointing to a link farm, a common tactic for phishing or distributing further malware. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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 http://print-printonline.com/ckfinder/userfiles/files/mozofavoneladezuzifu.pdf In PDF document text
    • http://xn--12cmi2byac9cdhd0hra6d7bxkwbgj1gch.com/user_img/files/72226128190.pdfIn PDF document text
    • http://zeminyerkaplama.com/upload/ckfinder/files/64499427577.pdfIn PDF document text
    • http://bayanairag.com/uploads/userfiles/files/gogelubawikiwivep.pdfIn PDF document text
    • https://speculatio.in/ci/userfiles/files/23532376398.pdfIn PDF document text
    • http://domadoma.cz/userfiles/file/gulijevirexod.pdfIn PDF document text
    • https://www.web2business.pt/wp-content/plugins/formcraft/file-upload/server/content/files/161417f86f418b---71924603781.pdfIn PDF document text
    • http://enotecagaribaldi.it/userfiles/files/duziporos.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16145d55eb732f---73154043339.pdfIn PDF document text
    • https://by-express.com/upfiles/editor/files/96234173533.pdfIn PDF document text
    • https://artbynela.com/uploads/file/23255563319.pdfIn PDF document text
    • http://metrominicabs.com/survey/userfiles/files/kufazetejopoguxufafatij.pdfIn PDF document text
    • https://guruvinodji.com/Userfiles/file/86076817304.pdfIn PDF document text
    • http://kidsjeodo.com/images/files/46521082411.pdfIn PDF document text
    • http://www.puhito.hu/uploads/dinipowoxepoju.pdfIn PDF document text
    • https://littleitalypizzany.com/nbloom/fckuploads/file/lifusomugepene.pdfIn PDF document text
    • http://btsoft.vn/uploads/files/tasif.pdfIn PDF document text
    • http://amexeuro.com/an3_Uploads/file/20394413368.pdfIn PDF document text
    • http://zhengfutz.com/v15/Upload/file/20219171255261832.pdfIn PDF document text
    • https://ibrahimkoc.com/images/Media/files/48140177506.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=aqua+pets+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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c469.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC469 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000dc80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC80 10564 bytes
SHA-256: 3224a9e1e2ebbac14829ecf476933c3346d2c7908fdf020f227e9615ab697571
font_02_sfnt_off0000f486.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF486 17760 bytes
SHA-256: 45d8e95c7e7c477307928c0a5fdd2dc474f4977ea5d84f777aaa28bd57012d09

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