Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5058674d140f7e6…

MALICIOUS

PDF

92.9 KB Created: 2021-07-23 13:31:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 94d7f4424bac29ea1db574e332be97a0 SHA-1: b4f7ab6f64a4fd367247801bda81d19d0adcb011 SHA-256: e5058674d140f7e640641bc7837b5abd02d31be99a7080b4aac166dcdd6af312
156 Risk Score

Malware Insights

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

This PDF was identified as malicious by ClamAV and an ML classifier, indicating it is likely a phishing or trojan delivery mechanism. It functions as a link farm, with many embedded URLs pointing to other PDFs hosted on compromised websites or disposable domains. The primary purpose appears to be directing users to malicious content, potentially for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9987

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 https://www.federatedlighting.com/wp-content/plugins/super-forms/uploads/php/files/bf6f1eea81cd964cd6cc9e931b8f34fd/26239460815.pdf In PDF document text
    • http://e-hematologica.pl/users//file/61281582354.pdfIn PDF document text
    • https://dermo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d0ce6f27ec0---losuvokubabalojunaniz.pdfIn PDF document text
    • https://oklogistic.lv/upload/file/suzimodud.pdfIn PDF document text
    • http://architetturaurbanistica.it/userfiles/files/40794557663.pdfIn PDF document text
    • https://mobilieroccasion.fr/uploads/file/tekifeme.pdfIn PDF document text
    • http://bridgesonthepark.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e1926e2c96---sirun.pdfIn PDF document text
    • https://skvely-kup.cz/files/file/56555203305.pdfIn PDF document text
    • http://alituncer.com/userfiles/file/57200990935.pdfIn PDF document text
    • http://atdawnwelift.com/userfiles/file/29961134086.pdfIn PDF document text
    • http://www.dnevi-sekretarjev.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1608f89af664f7---9168536899.pdfIn PDF document text
    • https://petroblend.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a83da89b794---99182953137.pdfIn PDF document text
    • http://geology.ie/wp-content/plugins/formcraft/file-upload/server/content/files/160c2a04855c06---gidebofuzasugerajowaf.pdfIn PDF document text
    • https://www.numberoneporthill.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160b73008c309c---49975691415.pdfIn PDF document text
    • https://ncfouting.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ef0a54c6b2---16628121839.pdfIn PDF document text
    • http://www.drop-lok.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077071165ab4---69769951442.pdfIn PDF document text
    • http://peaktoppet.com/ck_imgs/files/niselewawadanakixi.pdfIn PDF document text
    • https://amalighting.com/wp-content/plugins/super-forms/uploads/php/files/2912b624bbf3a5eb42898383cc068dc1/xasale.pdfIn PDF document text
    • https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/f6ad3cfdedd646fe0ffa52aa42e205a0/17691756558.pdfIn PDF document text
    • http://reclaimsplus.com/wp-content/plugins/super-forms/uploads/php/files/80e614ed76785fa672e872b00b63bcd8/nelidorutumimoze.pdfIn PDF document text
    • https://realestateconnect.us/wp-content/plugins/super-forms/uploads/php/files/bbchrvqs2gieafb5l08kppste2/jizubisoki.pdfIn PDF document text
    • https://unitedfightalliance.com/ckfinder/userfiles/files/50072262711.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=vray+fur+3ds+maxPDF 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_off00010711.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10711 17008 bytes
SHA-256: 937ed2b77a7540db9f6ea3cd7550dcef88f3bf07e92e9c68eff220ff3f67de87
font_01_sfnt_off0001337b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1337B 10380 bytes
SHA-256: d8805ebe4137ad3a178060af8b04f60e01b86e101da40feb6722b4bfd4e9786b
font_02_sfnt_off00014b09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14B09 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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