Malicious PDF — malware analysis report

Static analysis result for SHA-256 2950b46c739de0dd…

MALICIOUS

PDF

151.7 KB Created: 2021-07-25 20:25:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-17
MD5: 17eb1348eb2f14f82a0fe1184888eb5d SHA-1: ed98b624ae195fed6b9aa85917f00b3d846f8171 SHA-256: 2950b46c739de0dd8657fadca4db6505661cf65ffc241c2d608f56ce80a2e754
156 Risk Score

Malware Insights

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

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated a high probability of maliciousness. The document contains numerous links, many pointing to compromised CMS upload storage or disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The presence of external URIs and the overall structure indicate an attempt to exploit users through deceptive links, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9756

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://minegociomiweb.com/userfiles/file/riximunesavo.pdf In PDF document text
    • https://agilitynd.com/wp-content/plugins/super-forms/uploads/php/files/cc61c8c1226880beb794ad03d924340c/balokub.pdfIn PDF document text
    • https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608d25de0c38e---76965102257.pdfIn PDF document text
    • http://quickfix-poland.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b65d92b1866---81321255890.pdfIn PDF document text
    • http://china-hold.com/UploadFile/file/20210516221828168.pdfIn PDF document text
    • http://dzbnf.com/upload/file///ruxeranesekev.pdfIn PDF document text
    • http://alfavs.eu/userfiles/file/53438568378.pdfIn PDF document text
    • https://benchmarktransitions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b423d5abb62---31419922647.pdfIn PDF document text
    • https://olivier-daulte.com/ckfinder/userfiles/files/45157573361.pdfIn PDF document text
    • http://reclaimsplus.com/wp-content/plugins/super-forms/uploads/php/files/e42ed8507a419aa417d4f65eba625a01/61461825372.pdfIn PDF document text
    • http://carzip.biz/files/uploads/files/31475648810.pdfIn PDF document text
    • http://susasoft.com/upload/userfiles/files/mevirasujigeduwaveg.pdfIn PDF document text
    • https://alkathirilaw.com/userfiles/files/7579153605.pdfIn PDF document text
    • https://uaqbakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/160adc669af363---11152497527.pdfIn PDF document text
    • https://smartstone.ca/userfiles/files/piwitereboso.pdfIn PDF document text
    • http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/jra4ud62iqks27l7m0nlbjdgt7/lapajuwowedefofokemid.pdfIn PDF document text
    • https://www.lang-mayer.de/wp-content/plugins/formcraft/file-upload/server/content/files/16083023d9218a---vanisuxukedetifozutejawi.pdfIn PDF document text
    • https://journeypeople.cc/wp-content/plugins/super-forms/uploads/php/files/01b1987e53d3a06e8def3de6f1a7b051/74913027501.pdfIn PDF document text
    • http://mini-garden.ru/userfiles/file/legirizulevamiwunar.pdfIn PDF document text
    • https://lokmangal.co.in/wp-content/plugins/super-forms/uploads/php/files/44cbebd64f30f3d1dd02ab534a4329fc/gazapibosabele.pdfIn PDF document text
    • https://alphaveneers.co.uk/wp-content/plugins/super-forms/uploads/php/files/9b74e552910ced25f2ab52d001cd50c7/jijivemabagaxowelenutak.pdfIn PDF document text
    • http://www.odnpoznan.pl/fotki/file/file/sitelelop.pdfIn PDF document text
    • https://hartwellcook.com/wp-content/plugins/super-forms/uploads/php/files/078e29faba07f34ffa1807c631966733/sutejowafobepozagadizilob.pdfIn PDF document text
    • http://akicgiyim.com/userfiles/file/61916150898.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=la+interminable+conquista+de+mexico+resumen+por+capitulosPDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001ce9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1CE9E 21120 bytes
SHA-256: f616152acf22d00b79f77a043089d231a8e31f8614362b64546d392d5a29185f
font_01_sfnt_off0002041c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2041C 16828 bytes
SHA-256: 51170121bf34cbeb46234a8ddc7294441f5a66ef97a90fe9ec2b382c5e2d50a8
font_02_sfnt_off00021c6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x21C6B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off00023482.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x23482 11120 bytes
SHA-256: af2a1b912923d8b0b82b070e49ad76b12f094ff8b46b375149c85b18816bf969

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