Malicious PDF — malware analysis report

Static analysis result for SHA-256 88b2c143edc2a069…

MALICIOUS

PDF

309.2 KB Created: 2022-04-18 08:45:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-03
MD5: f27b8c7377a1bb8ff09dc744bb1ee818 SHA-1: 3470dda7b7213c72dbcfe5250d1f133052af382f SHA-256: 88b2c143edc2a0699e920e71af90a94238cd4d28073eb2e74fa86e64286ef2cd
166 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file leverages a lure related to job opportunities or reports, directing users to multiple compromised websites. The presence of numerous URLs pointing to potentially malicious content and the ML classifier's high confidence score indicate a phishing or malware distribution attempt. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9445

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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.
  • 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://mifuj.co.za/XSRYdR1H?utm_term=democracy+reporting+international+ggmbh PDF link annotation
    • http://utuin.net/files/fckeditor/file/33238873183.pdfIn PDF document text
    • https://www.harnoordesigns.com/wp-content/plugins/super-forms/uploads/php/files/1706825c086f658979543c8f264600ac/26220820277.pdfIn PDF document text
    • https://ceilford.org/wp-content/plugins/super-forms/uploads/php/files/bd2644d996174a2b34003b20480bb2bd/rajaritorege.pdfIn PDF document text
    • https://bemakidej.weebly.com/uploads/1/3/0/7/130739127/vulumeliru.pdfIn PDF document text
    • http://pasarantogel2.com/contents/files/30657836623.pdfIn PDF document text
    • http://audidalys.lt/ckfinder/userfiles/files/13736557522.pdfIn PDF document text
    • https://gamowova.weebly.com/uploads/1/3/4/8/134881319/7705117.pdfIn PDF document text
    • https://ckv-siemreap.org/ckfinder/userfiles/files/48054108509.pdfIn PDF document text
    • http://www.nanodrywash.com/wp-content/plugins/formcraft/file-upload/server/content/files/162413153e0c5d---54371373230.pdfIn PDF document text
    • https://ruvawuwejijexut.weebly.com/uploads/1/3/0/8/130814193/gosibod-tegutirotitufum.pdfIn PDF document text
    • https://generixa.weebly.com/uploads/1/3/5/3/135350481/56ee89069.pdfIn PDF document text
    • http://niktid.ru/userfiles/file/84096101188.pdfIn PDF document text
    • https://vetenejoxo.weebly.com/uploads/1/3/1/3/131379321/mofamudibewak.pdfIn PDF document text
    • https://share.linkilike.com/libraries/kcfinder/upload/files/9694882444.pdfIn PDF document text
    • https://pakurematumomu.weebly.com/uploads/1/3/4/7/134764434/4e8963cae44b.pdfIn PDF document text
    • https://kusomafon.weebly.com/uploads/1/3/7/5/137504755/nodewaluziwib.pdfIn PDF document text
    • http://bascobrunswick.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1625396262a8d1---63717728482.pdfIn PDF document text
    • http://www.deopendeur.org/imgUser/file/5624745290.pdfIn PDF document text
    • https://meduxivanudi.weebly.com/uploads/1/3/4/8/134871921/fenisipuvejoz-xoxopagirir-kesuxuna.pdfIn PDF document text
    • http://factorysales.com/userfiles/files/xulazilo.pdfIn PDF document text
    • 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 extracted file (font_00_sfnt_off0004643b.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0004643b.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0004643b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4643B 10908 bytes
SHA-256: 6605dcaa28b366802879acc891eb7cd0d2221205f10bdb7a455c4ef7050a33b6
font_01_sfnt_off00047d08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47D08 18932 bytes
SHA-256: 4a27ea8c028de21e5d0944028fe0c799b34d4c7aa8cb50f57891c51e11c062c1
font_02_sfnt_off0004ae17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4AE17 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1