Malicious PDF — malware analysis report

Static analysis result for SHA-256 01dd1aaa4bda2967…

MALICIOUS

PDF

83.4 KB Created: 2021-09-01 02:12:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 7e19dda45753976a1fb37b026b3b1eae SHA-1: 23dde64ef21d6ef9f35ada0c15e42a48d6919eb9 SHA-256: 01dd1aaa4bda29676148f276bf1cedf88f81807daa0a77142c15e760ce07aeb3
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external URIs and is identified as a link farm, likely intended to redirect users to malicious sites. The presence of embedded JavaScript, combined with the ClamAV detection of 'Pdf.Phishing.Trojan', strongly suggests a phishing or malware distribution attempt. The ML classifier also flagged this PDF with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 7

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://ketchas.ru/uplcv?utm_term=variety+meaning+tagalog PDF link annotation
    • http://e-skala.pl/userfiles/file/sezeru.pdfIn PDF document text
    • http://antik-cafe-bergen.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b7250c08ae1---63157371644.pdfIn PDF document text
    • http://spoanalyze.com/wp-content/plugins/super-forms/uploads/php/files/32a01650fda6a6d36d472c8e4e805b95/46778153264.pdfIn PDF document text
    • http://greece-ex.com/images/blog//file/wowidovisukogizap.pdfIn PDF document text
    • https://www.uniqueartzz.com/wp-content/plugins/super-forms/uploads/php/files/q21h6p3pdh16cth6uo2nqvh0ih/kabafuselixupamisojugazuj.pdfIn PDF document text
    • http://amandatour.ru/js/ckfinder/userfiles/files/89429773827.pdfIn PDF document text
    • https://lashmakerpro.it/wp-content/plugins/super-forms/uploads/php/files/ulkkpl8vo88lucs8hm3ohppft7/zegemabojupidotut.pdfIn PDF document text
    • https://www.eos.org.eg/ckfinder/userfiles/files/32965071642.pdfIn PDF document text
    • https://wscnaturalhealings.com/wp-content/plugins/super-forms/uploads/php/files/d3d21cf627c8d90af2dd8e0848b4e4f5/2715326137.pdfIn PDF document text
    • https://chamsocmuihong.com/wp-content/plugins/super-forms/uploads/php/files/4a2t5mm7hcm4rdabbpk61gk690/32024136600.pdfIn PDF document text
    • http://incomingmakedonia.com/files/files/diwerejumoneriwukitotolu.pdfIn PDF document text
    • https://puertoestereo.com/wp-content/plugins/super-forms/uploads/php/files/l42k9lichpoequi9pk9ld8jp62/mozuta.pdfIn PDF document text
    • https://www.dynasil.com/wp-content/plugins/super-forms/uploads/php/files/413df619e91923fbd27162e414ebae4f/96946894464.pdfIn PDF document text
    • http://alemotta.com/resources/original/file/zajaluraputis.pdfIn PDF document text
    • http://autoshiftbid.com/fckeditor/userfiles/file/6214747986.pdfIn PDF document text
    • https://www.ewdel.cz/ckfinder/userfiles/files/surokolinegadorisawuvivis.pdfIn PDF document text
    • http://www.myhhsi.com/wp-content/plugins/super-forms/uploads/php/files/5998a6ba358a51a361a9d9b7de268308/gumusaturixepisiven.pdfIn PDF document text
    • https://www.gml.de/wp-content/plugins/formcraft/file-upload/server/content/files/160d6576653b5a---sowatewokotosesepekawel.pdfIn PDF document text
    • http://rotarybrescello.it/userfiles/files/62221681544.pdfIn PDF document text
    • http://www.argentum.com/wp-content/plugins/super-forms/uploads/php/files/q5g5faaukvratcbshoak396mif/14277175912.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_off0000d5b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5B3 22896 bytes
SHA-256: c1269020f5d72b418d014c83617a3e24da25dfb553dbcd343e27b0b600cf177a
font_01_sfnt_off000110ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110EE 10368 bytes
SHA-256: 261dbf50e90ae30254e621301a82f9fe5924051b4ecf69ac4573180355441125
font_02_sfnt_off0001285a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1285A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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