Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed67bd194d234a85…

MALICIOUS

PDF

84.6 KB Created: 2021-08-30 09:45:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: b8c01ac0733641a8e9f146444c28968a SHA-1: e0d06e1de6c1c8763b1349e5736004b5aebd3912 SHA-256: ed67bd194d234a85bb8799ba3cf4943f75f2033a53a05b991182d0381014faf0
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous links pointing to compromised WordPress sites, suggesting a phishing or malware distribution scheme. The PDF itself appears to be a link farm, likely intended to redirect users to malicious content hosted on these compromised domains.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9918

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 http://www.sunarozlem.com.tr/wp-content/plugins/super-forms/uploads/php/files/m1ukc04ukea54p9lc7dj6583l0/29743953801.pdf In PDF document text
    • https://www.wikiwebagency.it/wp-content/plugins/super-forms/uploads/php/files/7796aeb801dd963da05fe26125e76cef/gewurirufopowizope.pdfIn PDF document text
    • http://gapoom.com/upload/fckeditor/file/lukapokur.pdfIn PDF document text
    • https://hmanagement.net/userfiles/file/42964946388.pdfIn PDF document text
    • http://www.fotografoeventimilano.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f2eda57b65b---16491671735.pdfIn PDF document text
    • http://www.virtualaid.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1609b438fc735a---96833681513.pdfIn PDF document text
    • https://likeevent.it/writable/public/userfiles/file/nagetulitisomuwije.pdfIn PDF document text
    • http://connect-senior.ch/uploades/userfiles/file/pabivesujugadujunapukew.pdfIn PDF document text
    • https://wecareprogram.org/images/file/bunoxogowuk.pdfIn PDF document text
    • http://alisawedding.com/upload/users/files/44771018831.pdfIn PDF document text
    • https://nothingbutsafetyglasses.com/userfiles/file/favixurugubeluvu.pdfIn PDF document text
    • http://steclotildehorton.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160f5877f7b950---47821541875.pdfIn PDF document text
    • http://asztalosweb.hu/userfiles/file/wonekaraviwutofegapavifi.pdfIn PDF document text
    • https://skvacations.com/userfiles/file/nikatijupevefis.pdfIn PDF document text
    • https://noblacklist.pro/web/img/podborky/files/23044664639.pdfIn PDF document text
    • http://iwishop.hu/file/4366331119.pdfIn PDF document text
    • http://thedreams.cz/files/sofevakexekudaloxu.pdfIn PDF document text
    • http://www.jhannahs.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d59a204aac---52902656779.pdfIn PDF document text
    • https://udachi.co.th/wp-content/plugins/super-forms/uploads/php/files/7t7l75pnbosnjc3ufsvbofd198/7483525940.pdfIn PDF document text
    • https://graffitipaintstudio.com/wp-content/plugins/super-forms/uploads/php/files/52688ecff3294dc5393703ef6f13e6bd/benelumudi.pdfIn PDF document text
    • https://lcd96.ru/wp-content/plugins/super-forms/uploads/php/files/26c92b02b224bed4640f2b37796447b3/96982226822.pdfIn PDF document text
    • http://bortran.com/upload/image/file/20210707034740.pdfIn PDF document text
    • https://aiaciran.org/cache/fck_files/file/jerukiwivavibus.pdfIn PDF document text
    • https://bizdrive.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/160874b945f674---givujal.pdfIn PDF document text
    • http://cocoal.com/uploads/file/wuxofe.pdfIn PDF document text
    • https://www.sgestrecho.es/wp-content/plugins/formcraft/file-upload/server/content/files/160b614baa4a5f---28902178827.pdfIn PDF document text
    • http://studiotecnicobergamaschi.it/userfiles/files/xamaxunewekopeki.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=talking+over+someonePDF 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_off0000e369.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE369 19100 bytes
SHA-256: 7d7049dc4a99d1068d2c4e4ca9e5dbfc29b7c20343e1f013e52820a491013d45
font_01_sfnt_off00011418.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11418 10472 bytes
SHA-256: 9f638cc4b48f093cd9c4aa99ed7628ee0a837a89897cc96be3920d1b51e34f20
font_02_sfnt_off00012be5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12BE5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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