Malicious PDF — malware analysis report

Static analysis result for SHA-256 1bade9f95c5d35ba…

MALICIOUS

PDF

90.5 KB Created: 2021-08-08 21:01:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 7b063cfb18c0ec091be87bf5e5418e24 SHA-1: 4ecbbf0bae4e42c1758691d3e0f9419df0eff7e5 SHA-256: 1bade9f95c5d35bae9ab549fbcb62c370133de0eecb899efadc10d023ca7da9a
164 Risk Score

Malware Insights

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

The PDF contains a large number of external URIs and link farm heuristics, indicating it is designed to redirect users to various websites. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. The presence of a 'download button' lure further supports a deceptive purpose.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9876

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
  • 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.
  • 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 https://lostsoulsmemorialnj.org/wp-content/plugins/super-forms/uploads/php/files/572e737748f5144562eac7b09fb4cb88/repetunosetosarurorulol.pdf
    • http://df-foundry.net/d/files/50687752095.pdf
    • http://studioagm.it/userfiles/files/tebiroxuzemesaxixelijis.pdf
    • http://inspirationallabels.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160b56d9173f99---junusilase.pdf
    • https://tideandtigers.com/ckfinder/userfiles/files/81404249185.pdf
    • http://pansophers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160829170f2a4a---21241622919.pdf
    • http://files.ibiza-ferien.de/file/82428835466.pdf
    • https://beautyyaurient.com/editor_upload/file/zajenudopikatu.pdf
    • https://provisionsinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6da03d37ec---gedegiginepadirulifo.pdf
    • https://copperscraphandlers.com/ckfinder/userfiles/files/75511963210.pdf
    • https://irastuff.com/admin/ckfinder/uploads/files/mizisizosuj.pdf
    • https://thehero88vip.com/ckfinder/images_store/files/99178771166.pdf
    • http://barrarioservicos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1610d98aa3a308---kodoxujoxeguka.pdf
    • http://dallassymphonyleague.com/clients/1/14/14bb4a025281f1a32078cb68571f7cf3/File/vovokewagisimopugabomavot.pdf
    • https://laflammerouge.ch/userfiles/files/japelimuvawuniluwo.pdf
    • http://reversetheclocknow.com/ckfinder/userfiles/files/93202451832.pdf
    • http://bualuang101.com/backoffice/upload/files/30452610275.pdf
    • http://3duct.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609a3127c327c---63133916778.pdf
    • https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/4ab891d4ac43ab1b073fed33b67c1a74/47662357540.pdf
    • https://pristineleather.com/userfiles/file/dataditizikokadisip.pdf
    • http://www.jcca.co.in/wp-content/plugins/formcraft/file-upload/server/content/files/16083acc5bab8e---wupowitobowilew.pdf
    • http://bmsorganica.com/userfiles/file/molilowajajufi.pdf
    • http://qdjshg.com/files/file/3469819.pdf
    • https://www.hosotte.com/ckfinder/userfiles/files/48078470182.pdf
    • https://www.entornopublicitario.com/wp-content/plugins/super-forms/uploads/php/files/be32b5217c9580848591900aa83e0f56/sonitedeferugudajuju.pdf
    • http://hattrick-sports.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f071192fe0---71854108496.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=cheat+codes+minecraft+pocket+edition+android
    • 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_off0000faef.bin
f286e7bba29520b21ae07c1d5557d5991bf5a3b374bb475a44357bf1c16fd66c
pdf-font-stream PDF embedded font (sfnt) at offset 0xFAEF 10964 bytes
font_01_sfnt_off00011434.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x11434 16792 bytes
font_02_sfnt_off00012c46.bin
b52f05d837a453a1add55a3849d539fb710258d85bd9fb09d83ad73bc76e2878
pdf-font-stream PDF embedded font (sfnt) at offset 0x12C46 17824 bytes