Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0b2a26b6fe56661…

MALICIOUS

PDF

76.9 KB Created: 2021-09-16 06:22:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-22
MD5: 3aeea7a9325e479c1754f5b042fffca8 SHA-1: ab21420b74498f879ce60b7b05aeabf34a0f862a SHA-256: f0b2a26b6fe56661079ddd41f295d91c76e5055230e635b17cd5bc8df9f46468
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many pointing to domains that appear to be part of a link farm, suggesting a phishing or malware distribution scheme. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' specifically highlights the use of disposable hosting and a redirector, reinforcing the malicious nature of the links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

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://88cpap.com/userfiles/files/35663768384.pdf In PDF document text
    • http://centromedicoveterinarioadda.com/userfiles/files/kuwejonoxemujalewanefax.pdfIn PDF document text
    • http://arenabilardo.com/data/_files/gifagikiwaxudawek.pdfIn PDF document text
    • http://ukonlinedirect.com/userfiles/files/5377094775.pdfIn PDF document text
    • http://baharemadinah.com/wp-content/plugins/formcraft/file-upload/server/content/files/16140ba7a8ba98---worabopada.pdfIn PDF document text
    • http://jindi2010.com/uploadfile/files/72197292549.pdfIn PDF document text
    • https://ibericadearmerias.com/file/getofilavodafotufet.pdfIn PDF document text
    • http://bannails.com/fckeditor_userfiles/file/62605169280.pdfIn PDF document text
    • http://bukharaatlanta.com/sites/default/files/file/dojoto.pdfIn PDF document text
    • https://nabsangram.com/userfiles/file/wigazifexuderevigebadu.pdfIn PDF document text
    • https://refundsrefunds.com/wp-content/plugins/formcraft/file-upload/server/content/files/16133991e9ab1e---vovudagateru.pdfIn PDF document text
    • http://inbjnews.com/data/cheditor/0603/files/momiwufo.pdfIn PDF document text
    • https://togelunited4d.com/contents/files/rerunu.pdfIn PDF document text
    • http://lagunaapartman.hu/images/user/file/kibobiwul.pdfIn PDF document text
    • http://changwontour.kr/FileData/ckfinder/files/20210902_02CBC3E14B35BF9B.pdfIn PDF document text
    • https://aftaplan.com/works/peepsparty/html/upload_files/file/kozujenokomej.pdfIn PDF document text
    • https://cedria.es/DOCUMENTS/FotosFCKEditor/file/97362351564.pdfIn PDF document text
    • http://fourfoods.com/images/files/venexopiv.pdfIn PDF document text
    • http://tgroupsrl.com/userfiles/files/24200948005.pdfIn PDF document text
    • http://santabruna.cl/upload/file/64574543864.pdfIn PDF document text
    • https://clubsecurite.fr/webroot/upload/files/sadaminesemekusoninikug.pdfIn PDF document text
    • https://12waktu.com/contents/files/zironimokerelomajodo.pdfIn PDF document text
    • https://nguyenthelong.net/userfiles/files/fewuwazizuwu.pdfIn PDF document text
    • http://www.weilandensemble.nl/ckfinder/userfiles/files/rapanarobezavopegixozogu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=story+of+your+life+pdfPDF 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_off0000c6f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6F4 18696 bytes
SHA-256: 1e96bb614c976807194129d128f0ad8905507133f69e6e3b122f99e0dd61de95
font_01_sfnt_off0000f6fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6FD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010f14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F14 10348 bytes
SHA-256: 8f6f74548d3651ec147c5604b9b391be312e13ebc53e0a619173e8ad560bec1f

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