Malicious PDF — malware analysis report

Static analysis result for SHA-256 5beec240e917f936…

MALICIOUS

PDF

98.0 KB Created: 2021-06-28 09:23:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: ca8400bb67cf03ddeb480619540ac08d SHA-1: cfe8a8f1083091de475e88fe4ae71c0fa31725dd SHA-256: 5beec240e917f936456c850b7ef7635945311af6a71c1b880541f859e44bf1d2
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan. The document contains numerous embedded URLs, many pointing to compromised WordPress sites, suggesting a phishing or malware distribution campaign. The heuristic 'SE_LOLBIN_RUN_COMMAND' indicates the presence of commands like 'curl' within the document text, further supporting the malicious intent of directing users to external resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9898

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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://wastran.ru/uplcv?utm_term=calculate+divergence+and+curl
    • https://www.escon.it/wp-content/plugins/super-forms/uploads/php/files/ae71364e2c1be7c09714c37fac93210a/58753252743.pdf
    • http://pavcargo.ru/wp-content/plugins/super-forms/uploads/php/files/0c8cc29ffe6681b9378d431326ba62f1/rirepolufovabunirida.pdf
    • http://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609a3582818be---zizafopexupino.pdf
    • https://ahi.com.ua/wp-content/plugins/super-forms/uploads/php/files/8756e807ac44c022e4345f799efae222/26066775740.pdf
    • https://ahi.com.ua/wp-content/plugins/super-forms/uploads/php/files/1a1f534282a22a60568b91351efc502e/52439284247.pdf
    • http://churchliferesources.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607f06057cf3e---letom.pdf
    • http://beveragesgs.com/userfiles/file/26812520298.pdf
    • http://diclenakliyat.com/userfiles/file/99671292308.pdf
    • https://www.modianodesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aaaef54d84d---72844979271.pdf
    • http://www.miamiairportlimo.net/wp-content/plugins/formcraft/file-upload/server/content/files/16074a9eb295eb---67642099955.pdf
    • http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/b1dc0274801df21565497d75bbdf797c/9094625692.pdf
    • http://mirrorgallery.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c971b47b70a---ditewevomowipofumowu.pdf
    • http://tizianaiberti.it/userfiles/files/surefizepuwipetav.pdf
    • http://kledingindex.nl/images/uploads/sofobotebisukesumowe.pdf
    • https://digidatadecolombia.com/wp-content/plugins/super-forms/uploads/php/files/cddf884084086cffd4921169e2a25c9d/9968227165.pdf
    • https://www.waterlooarmsnewforest.co.uk/wp-content/plugins/super-forms/uploads/php/files/ad69250e0d1582726c04eb611b499c4a/senezisominasewel.pdf
    • http://nnk.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1608f58d0789b3---40997289576.pdf
    • https://rockyshairsalon.com/wp-content/plugins/super-forms/uploads/php/files/u9fbthecqqmkp9kc75gj130meu/zovesomovukozisomivesom.pdf
    • http://www.appsolutely.sg/wp-content/plugins/formcraft/file-upload/server/content/files/160af7f0248a47---vufepemuxogotufetika.pdf
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16099cb6ebe9b6---vopovufaxu.pdf
    • http://matstravel.ru/userfiles/file/46284702802.pdf
    • http://xn--m1age8bh.xn--p1ai/files/file/15939449558.pdf
    • http://stpatricksreunion.com/clients/84553/File/47577134753.pdf
    • https://www.escon.it/wp-content/plugins/super-forms/upl
    • 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000100bb.bin
5a7f71e728a2158b544bdc218cb6a1fae8aa8103fad16c760eaa8c8d087c18d7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x100BB 18984 bytes
font_01_sfnt_off00013376.bin
38e6d1a790b6142bf497410e3d6c2d74eb744ac920c513bb577b2f64cf473a86		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13376 16560 bytes
font_02_sfnt_off00014ace.bin
b6a1d246496073ee591f918883812f5a40013b4c90df86d38d9f00c2e9e2c63c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14ACE 10452 bytes
font_03_sfnt_off00016270.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16270 16792 bytes

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