Malicious PDF — malware analysis report

Static analysis result for SHA-256 e086092c1351a3ae…

MALICIOUS

PDF

82.7 KB Created: 2021-09-14 06:44:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: f0d075092910e457b6d5e472cbe2fb88 SHA-1: f1c2a707e580b1c1ab1f0f50cede5999dfedfee0 SHA-256: e086092c1351a3ae98380e8ab1767fc2580248198cc39eeaab0df2c9dced99a6
154 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The presence of a 'SE_DOWNLOAD_BUTTON' heuristic and numerous embedded URLs, many pointing to PDF files on various domains, suggests a phishing or scam attempt. The 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic further indicates a pattern of distributing malicious content through numerous, potentially deceptive links. The ML classifier output of 0.995084 strongly supports the malicious classification.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://rosg.net/sa_upload/userfiles/file/20210913164543.pdf In PDF document text
    • https://jyapa.com/jhuoyue/uploadfiles/55738580611.pdfIn PDF document text
    • http://damutech.kz/upload/2021/09files/210905193659955172sx5a2.pdfIn PDF document text
    • https://www.artikel238.nl/emmwebbit/resources/ckfinder/userfiles/files/jatoxeximasegodofovidu.pdfIn PDF document text
    • https://grupahatak.pl/admin/_fck_files/file/xuvokamejuzew.pdfIn PDF document text
    • https://hitourkorea.com/FileData/ckfinder/files/20210904_15BD8E441CC98138.pdfIn PDF document text
    • https://yucekalipmakina.com/tsrm1/img/userfiles/file/72310170241.pdfIn PDF document text
    • http://ipsaix.com/ckeditor/ckfinder/userfiles/files/94593478896.pdfIn PDF document text
    • http://swapnakoodu.com/fck_uploads/file/nowilaribitazaxiginirem.pdfIn PDF document text
    • http://www.hypnotiseur.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613bc4bf5cfb5---29311296809.pdfIn PDF document text
    • http://unitec-egypt.net/userfiles/file/19937509235.pdfIn PDF document text
    • http://globalbando.com/DATA/upload/files/202109011752274239.pdfIn PDF document text
    • https://www.bramfordgc.co.uk/ckfinder/userfiles/files/rikejotutidaxapapafavoted.pdfIn PDF document text
    • http://vivaibonomo.it/userfiles/files/peneme.pdfIn PDF document text
    • http://termocity.by/pics/files/funedoxiwetuni.pdfIn PDF document text
    • http://heryeryesil.com/resimlerfiles/88647347248.pdfIn PDF document text
    • https://faceless.me/userfiles/files/vamubiga.pdfIn PDF document text
    • http://gospelpour100voix.com/fichiers/newsletter/file/41301826246.pdfIn PDF document text
    • http://xpeedon.net/userfiles/file/20210906222118.pdfIn PDF document text
    • https://medicentrumnz.eu/medicentrum/files/file/vamuxataduranuj.pdfIn PDF document text
    • https://tktravelkorea.com/FileData/ckfinder/files/20210906_A7DFD1C5FCF77B81.pdfIn PDF document text
    • https://svetplus.com/userfiles/files/52589689207.pdfIn PDF document text
    • http://2446665a.ru/ckfinder/userfiles/files/sabagipidewopelozo.pdfIn PDF document text
    • https://hinaweb.com/upload/file/89283352110.pdfIn PDF document text
    • http://dobraukraina.org/sites/all/sites/dobraukraina.org/files/fudiregijotisu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=fortnite+code+generatorPDF 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_off0000dea3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEA3 18344 bytes
SHA-256: e1c1a719b0ef69c4158b4a9a8a5e23fad6c644777b1f6563b345c96a20827855
font_01_sfnt_off00010e27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E27 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001263e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1263E 10308 bytes
SHA-256: 1f19b95757e0e272641c63c2075f5812e468b0fcf70ab17366e0978a179a3f63

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