Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddccf5352bd23f1d…

MALICIOUS

PDF

153.9 KB Created: 2021-07-16 09:11:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: a4278dbff9c72309ac999a9f396aec05 SHA-1: 61c5384c566086968c61a3f8227f6354ff0143ab SHA-256: ddccf5352bd23f1d65e5f286b1b552f29d77e80b2127794501c10c2b13a4fec2
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics and ClamAV as malicious, indicating it is likely a phishing or malware distribution lure. The embedded URLs point to compromised WordPress sites and other disposable hosting, suggesting an attempt to redirect users to malicious content. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9936

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://catamma.ru/uplcv?utm_term=separate+correspondence+meaning PDF link annotation
    • http://www.lauricedale.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1607173f02bce4---lofipiliwunonekivobupume.pdfIn PDF document text
    • https://naseeha.org/wp-content/plugins/super-forms/uploads/php/files/04d096ee4936115948e1d44e9bab969a/xukamofar.pdfIn PDF document text
    • https://amalighting.com/wp-content/plugins/super-forms/uploads/php/files/aad67d2779fbf58bd3af7bfdc3f58687/7229093074.pdfIn PDF document text
    • http://www.uppld.org/wp-content/plugins/formcraft/file-upload/server/content/files/160b522002ccd8---linikikurabidi.pdfIn PDF document text
    • https://sygimportaciones.com/wp-content/plugins/super-forms/uploads/php/files/un2ibagcprvd451fp355ntl56o/8259040669.pdfIn PDF document text
    • https://lawpropertyconsultants.co.uk/wp-content/plugins/super-forms/uploads/php/files/0jua102gng28chf21fs70rlgcq/72452053338.pdfIn PDF document text
    • http://puntolinea.org/userfiles/files/vekafano.pdfIn PDF document text
    • https://atcotourismtravel.com/userfiles/file/miduziwe.pdfIn PDF document text
    • http://redigonda.it/userfiles/files/84888876536.pdfIn PDF document text
    • https://www.hotwaterfactory.com.au/wp-content/plugins/super-forms/uploads/php/files/3d67526699dc3df83158ac685ddce1d2/90779754365.pdfIn PDF document text
    • http://remont-elektro.eu/archiv/file/jawuwubalebebixune.pdfIn PDF document text
    • https://carpanea.it/wp-content/plugins/super-forms/uploads/php/files/7d24aa631a0b22b08f273c5f1d92cb0f/jovun.pdfIn PDF document text
    • https://www.scanworld.se/wp-content/plugins/formcraft/file-upload/server/content/files/1606d333382e18---99416564470.pdfIn PDF document text
    • http://marinapogon.pl/upload/file/xulabuwexefegexokidojuvuv.pdfIn PDF document text
    • http://jamoncup.es/wp-content/plugins/formcraft/file-upload/server/content/files/160c3f11d75055---27666213899.pdfIn PDF document text
    • http://oneself.pro/wp-content/plugins/formcraft/file-upload/server/content/files/16079920e492f1---30011063734.pdfIn PDF document text
    • http://nwatchonline.net/userfiles/file/pevekumonugox.pdfIn PDF document text
    • http://erdivigado.hu/userkepek/file/defebawopesadep.pdfIn PDF document text
    • https://ohligschlaeger-berger.de/wp-content/plugins/formcraft/file-upload/server/content/files/160705406745b2---mikubaletidasobagem.pdfIn PDF document text
    • http://scpt.it/userfiles/files/muviwanuwo.pdfIn PDF document text
    • http://jjinline.org/file_upload/file/67727302563.pdfIn PDF document text
    • https://pankalconstructora.com/wp-content/plugins/formcraft/file-upload/server/content/files/160798c97ea9a4---sikofotuxur.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 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_off0001f2c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1F2C3 21952 bytes
SHA-256: 399808420bd9d4a5be536bedff33bc69f077a6859234773d5d929489519188ec
font_01_sfnt_off0002291f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2291F 10888 bytes
SHA-256: 374387b58ed017562b61a98a255fd768897aeaae0564f4612acf144e165dcd5b
font_02_sfnt_off00024211.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x24211 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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