Malicious PDF — malware analysis report

Static analysis result for SHA-256 c345a66074a06d4c…

MALICIOUS

PDF

84.5 KB Created: 2021-07-08 01:08:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: a5efcc59f9aedb831f75abab7591a59f SHA-1: bad908e292a0f193483d07b4c0993b7f70dbad20 SHA-256: c345a66074a06d4cfe580d5432121289bf6ade4f2638108b63d5402973d716a0
144 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, indicating it is likely a phishing or trojan delivery mechanism. It contains numerous links pointing to various websites, many of which appear to be compromised WordPress installations or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of multiple PDF_URI and PDF_SEO_DISPOSABLE_LINK_FARM heuristics further supports this assessment.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4593

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
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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
  • 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://garglob.ru/uplcv?utm_term=how+does+yawning+occur PDF link annotation
    • https://zegabilisim.com/calisma2/files/uploads/95915738442.pdfIn PDF document text
    • http://dmhu.eu/uploads/uplib/file/datetamogenunusujuwala.pdfIn PDF document text
    • https://k-kompany.ru/wp-content/plugins/super-forms/uploads/php/files/ddedb1e6285d24d400993cf8134d3514/32698051565.pdfIn PDF document text
    • http://amandamaitland.com/images/file/98354980130.pdfIn PDF document text
    • https://www.marbelitesa.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1609af8cf6ecea---30695212136.pdfIn PDF document text
    • https://iuoshili.com/upload/users/files/dusivojodijobikotol.pdfIn PDF document text
    • https://prsnashville.com/wp-content/plugins/super-forms/uploads/php/files/2886888280d7c4845eb402a903431ce0/54582539171.pdfIn PDF document text
    • http://halvani.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f18c18c0f0---24921242615.pdfIn PDF document text
    • http://79.170.40.182/boothtastic.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cdf2a81955---96699208341.pdfPDF link annotation
    • http://srividyaastrology.com/userfiles/file/vetuxodelasuvepamokavawes.pdfIn PDF document text
    • https://www.lipfish.no/wp-content/plugins/formcraft/file-upload/server/content/files/160a62519e8295---kavoruwabawojejejiwosov.pdfIn PDF document text
    • https://www.pietri-automobiles.com/wp-content/plugins/super-forms/uploads/php/files/vh133bf84i0pl39uviu609udhs/jukapugebiduvomowozoris.pdfIn PDF document text
    • http://bigxra.com/uploadfile/file/2021060408183273499.pdfIn PDF document text
    • https://daismene.it/file/21511363740.pdfIn PDF document text
    • https://glasschneider.koeln/wp-content/plugins/super-forms/uploads/php/files/lbe2c86npc05cebp30doq0dh2t/92207135378.pdfIn PDF document text
    • http://toonesk.com/upload/todijarupamiraxixezuse.pdfIn PDF document text
    • http://giasuthienphuc.com/Images_upload/files/voworabufalix.pdfIn PDF document text
    • http://www.knickmeier.net/images/pageimg/file/78429051616.pdfIn PDF document text
    • http://le-lemniscus-incandescent.fr/ckeditor/upload/files/kufexokoroju.pdfIn PDF document text
    • https://martybermanassociates.com/wp-content/plugins/super-forms/uploads/php/files/cf2d14c2f1a45f6edd04aac17f4b8181/givijil.pdfIn PDF document text
    • http://finsura-lifedirect.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160976ab2cef8b---42381299245.pdfIn PDF document text
    • http://www.hotel-margherita.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c56c2b23bb2---kadujunufobekuboxume.pdfIn PDF document text
    • https://almoheetmanpower.com/public_html/userfiles/file/97731327225.pdfIn PDF document text
    • http://polymer-optix.de/userfiles/file/jomisinurodudemekipil.pdfIn PDF document text
    • http://siembra.me/uploads/files/83143399505.pdfIn 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_off0000fa30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA30 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00011247.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11247 10692 bytes
SHA-256: d69cc4834aa85f516096e86bebd2b3bdd2c83e47189ec017cf752c5f6329be2e
font_02_sfnt_off00012abc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12ABC 17684 bytes
SHA-256: 7b8399ab89c225435be0cc2ba549a707ec03f03abcca0e644cd652045c8f24b0

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