Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ee89c70b36067ff…

MALICIOUS

PDF

84.8 KB Created: 2021-08-05 21:00:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 332e002647f0816eb8ebf40f11766960 SHA-1: 0def71aebcb854538f1d9aafeb8135ddfee03478 SHA-256: 2ee89c70b36067ff6c6adec487b5dc69e5e78db9783572050c28fd6927951edb
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The file is identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, presenting numerous URLs that likely lead to phishing pages or malware downloads. The presence of multiple links on compromised WordPress upload storage and disposable hosting further supports this malicious workflow.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://pistant.ru/uplcv?utm_term=convert+pdf+to+dwg+autodesk PDF link annotation
    • https://art-gallery.mn/uploads/files/mevukovevegel.pdfIn PDF document text
    • https://tolgyesvolgy.hu/userfiles/file/xagunigotazapeli.pdfIn PDF document text
    • https://www.beewellrx.com/wp-content/plugins/super-forms/uploads/php/files/tmp/58701404516.pdfIn PDF document text
    • https://2greenchicks.com/wp-content/plugins/super-forms/uploads/php/files/18a00229b7978b8478031be99740810c/wiparinerifanuxejogeg.pdfIn PDF document text
    • http://doo-san.com/userfiles/file/20210517213244.pdfIn PDF document text
    • https://www.domosystem.gr/ckfinder/userfiles/files/rukiwetikiwej.pdfIn PDF document text
    • http://abaj.cz/UserFiles/File/52088775661.pdfIn PDF document text
    • https://drahmetbostanci.com/wp-content/plugins/formcraft/file-upload/server/content/files/16088892166e9e---jemixosu.pdfIn PDF document text
    • https://pass-eco-energies.com/ckfinder/userfiles/files/bisebuseloxarexilebeg.pdfIn PDF document text
    • http://www.asslar.de/downloads/nafetovok.pdfIn PDF document text
    • http://cosmic-kino.ru/sadm_files/sulikaj.pdfIn PDF document text
    • http://regmac.net/userfiles/files/muzuwujam.pdfIn PDF document text
    • https://tdfstore.it/file/94935653247.pdfIn PDF document text
    • http://akinmedical.com/uploads/file/73078873775.pdfIn PDF document text
    • https://www.andeanskyline.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b9a8a5b9b8---jurap.pdfIn PDF document text
    • http://bocghedanang.com/media/ftp/file/49359413794.pdfIn PDF document text
    • http://tlxzkj.com/uploads/file/161447039474.pdfIn PDF document text
    • http://graphicon.hu/wp-content/plugins/formcraft/file-upload/server/content/files/16083a0218e717---52697667507.pdfIn PDF document text
    • https://pikewallis.no/wp-content/plugins/formcraft/file-upload/server/content/files/1606d3c0cad4e1---jisirefibilirotaxa.pdfIn PDF document text
    • https://patoman.ro/ckfinder/userfiles/files/93415969321.pdfIn PDF document text
    • https://apoc.com.au/wp-content/plugins/super-forms/uploads/php/files/dac85087bf238ceb5722c4680f980666/mitisagumivapil.pdfIn PDF document text
    • http://teleserviciomalaga.com/ckfinder/userfiles/files/mojixaweloxevivasulu.pdfIn PDF document text
    • https://rmissio.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160c3649db322d---82104840599.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_off0000e854.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE854 16796 bytes
SHA-256: 455c1a1cbe8929195af16ddc7ae8eb17eb92f37d6331e0b8ab23d5516bddf593
font_01_sfnt_off0001143e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1143E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012c55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C55 10912 bytes
SHA-256: c42a81292bdefb47b54fe6b2532d182e7af8fed715e04f4e789a00acd0ebab75

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