Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e2c5ce6bd4a8923…

MALICIOUS

PDF

84.9 KB Created: 2021-09-05 02:04:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 1f2c8021abb3babe4bac479696cb1f61 SHA-1: 35cc178ed5612d32b1640fa98373ed1d8480e258 SHA-256: 5e2c5ce6bd4a892315d12898ff769c659f7b629374f90a9b787dcb7d38842a1c
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier as malicious. It contains numerous embedded URLs, many pointing to compromised WordPress upload directories, suggesting a phishing or malware distribution scheme. The document's structure and the presence of multiple external links indicate an attempt to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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=genius+5.1+5005+manual
    • https://www.medipratik.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f39311b3e74---44461534289.pdf
    • http://change-sexy.com/files/files/buweguwoda.pdf
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b2c7911f6ba---10842225179.pdf
    • https://stpetejazz.com/wp-content/plugins/super-forms/uploads/php/files/s0qq1d9puhga5prgdtod45f544/17123746499.pdf
    • https://ystechpro.com/nbloom/fckuploads/file/jepaf.pdf
    • http://milwaukee.center/userfiles/file/kemarufepedunuwuwavo.pdf
    • http://educationexplosion.com/clients/a/aa/aae59ec6301d25964842a0067e0ae100/File/rexodoba.pdf
    • https://cwlighting.com/wp-content/plugins/super-forms/uploads/php/files/008a6b7386e3d2427c5a07e4b2c92073/1811661999.pdf
    • http://beautybybelief.com/admin/images/file/poketope.pdf
    • http://nextgt.eu/uploads/file/lonovovefexojupusi.pdf
    • http://shuswapladystriders.ca/userfiles/file/goposajudopibifudalozel.pdf
    • http://champagne-marc-chauvet.com/images/files/xujifatetomafa.pdf
    • http://gildiamasterov.ru/userfiles/file/99589979866.pdf
    • https://aedwea.com/upload/foto/bivilagotidozef.pdf
    • http://www.pataniforum.com/admin/jquery/ckfinder/userfiles/files/84851325940.pdf
    • http://jts-electrical.co.uk/ckfinder/userfiles/files/16867558679.pdf
    • https://xn--z4qq44i.xn--kpry57d/upload/actfiles/zowuzesufusezi.pdf
    • https://laxmigrouppune.com/wp-content/plugins/super-forms/uploads/php/files/5bd24f342beda685ad75bd71cdddc4b5/67353293403.pdf
    • https://maharajganjtimes.com/assets/ckfinder/core/connector/php/uploads/files/48808081467.pdf
    • http://domholidays.com/userfiles/file/ridajumalufad.pdf
    • http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/gogk38k9ovv7ql3smej1tgp9db/kotivuvuro.pdf
    • https://www.temsilcisitesi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a4367322fd3---lawofafafexokidak.pdf
    • http://eortak.com/img/fck_temp/file/25093107089.pdf
    • https://daxitrip.com/basefile/daxitripcom/files/99859847353.pdf
    • http://gennarimaq.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160908b1ee2000---30582919506.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e01d.bin
85cec6a8803945cf2066be03b58b188e4dd863a526a8c4cf5b6126b7b2621177
pdf-font-stream PDF embedded font (sfnt) at offset 0xE01D 10464 bytes
font_01_sfnt_off0000f7f0.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xF7F0 16792 bytes
font_02_sfnt_off00011002.bin
541ff33fc9062a36848050f0e23c91d2444ccc4ab0f4066ad510f6bfee73098c
pdf-font-stream PDF embedded font (sfnt) at offset 0x11002 20592 bytes