Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee270e368a3ace1d…

MALICIOUS

PDF

101.9 KB Created: 2021-06-26 05:11:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 717f6f053f7dc7a3e279a50d30cb6764 SHA-1: be00a4e9af49a22bdd1a9fe70aed1aad154dd4e1 SHA-256: ee270e368a3ace1d7f8cbcfc4eef558d5c0f4b7ac3be0e52fb650efb8a2a9a8a
96 Risk Score

Malware Insights

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

The PDF contains a link farm pointing to numerous compromised websites, many of which host other PDF files. This suggests a tactic to manipulate search engine results or distribute further malicious content. The ML classifier strongly indicated maliciousness, and the structure points towards a content distribution or SEO poisoning scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9887

Heuristics 5

  • 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://maxim-catering.de/wp-content/plugins/super-forms/uploads/php/files/8voiedpshfnbcahdh65j89d572/buwiwepedeliwew.pdf In PDF document text
    • http://www.colegiometa.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/160c1a46497c3c---paworexan.pdfIn PDF document text
    • https://prosegik.com/wp-content/plugins/super-forms/uploads/php/files/4728eeccb24f19a2681c5c5d15b0840c/giroxujital.pdfIn PDF document text
    • https://saraelv.no/wp-content/plugins/formcraft/file-upload/server/content/files/160ae3d98ab930---misaxezuragerofa.pdfIn PDF document text
    • http://kezmosas.hu/files/file/dunakaritowel.pdfIn PDF document text
    • https://www.ideaklinikbakirkoy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e5856dd8c5---sipafa.pdfIn PDF document text
    • http://philippinesroadshow.com/wp-content/plugins/super-forms/uploads/php/files/a2dbbf1fd7290c68cbd3a73544274d88/vekasavozisufelenozagapew.pdfIn PDF document text
    • https://haps.company/wp-content/plugins/super-forms/uploads/php/files/oalsfehlm3ltvd1fg4hfg5l137/59959194848.pdfIn PDF document text
    • https://law.com.sg/wp-content/plugins/super-forms/uploads/php/files/ddc56c3fac781937d2af6491ca4d246c/85909643283.pdfIn PDF document text
    • http://pettwayfamilyreunion.com/clients/39389/File/rugusopajivuxuja.pdfIn PDF document text
    • https://www.geosuiteonline.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606ddd3609d1c---41897488490.pdfIn PDF document text
    • https://protechlighting.com/wp-content/plugins/super-forms/uploads/php/files/4c688f431df357d79b2763298d3385f0/47534662430.pdfIn PDF document text
    • http://puppies-4u.com/clients/e/e7/e7f09595da74c05d2059c741134300d2/File/zomapima.pdfIn PDF document text
    • https://specialbrands.gr/wp-content/plugins/super-forms/uploads/php/files/a28a2b6b5c677ff76eee781f2c8e79ce/98363304854.pdfIn PDF document text
    • http://hyosangjo.com/userfiles/file/20210624032937.pdfIn PDF document text
    • http://marcus-1.com/FileData/ckfinder/files/20210614_74EF82969DDE1172.pdfIn PDF document text
    • http://victorylimo1.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b4dc938551---94418769991.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e168b9b307---18845986544.pdfIn PDF document text
    • https://husvagnsexpo.se/wp-content/plugins/formcraft/file-upload/server/content/files/160c574da5c4ec---86013773251.pdfIn PDF document text
    • https://adbadog.com/wp-content/plugins/super-forms/uploads/php/files/933a5681f0bea2165f7fdb2c6f075c79/43806084469.pdfIn PDF document text
    • https://truck-diagnostic.ru/wp-content/plugins/super-forms/uploads/php/files/b31151e78908c290a5e98f6fa19d1b4b/liwemasawes.pdfIn PDF document text
    • https://bringem.de/wp-content/plugins/super-forms/uploads/php/files/185cb4243ed5d52d6e0dee2a9bd0b249/laretogik.pdfIn PDF document text
    • http://rialta.ie/userfiles/files/35241970033.pdfIn PDF document text
    • http://nextgenship.net/upload/file/20210615162376615532.pdfIn PDF document text
    • https://www.numberoneporthill.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1609566e1ba7ca---19205923173.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=eat+that+frog+synopsisPDF 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_off000116fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116FE 16976 bytes
SHA-256: f3a1a0398a035ec59729af92806e3988fe2d18249867d894b38018c42716e250
font_01_sfnt_off000142fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x142FD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00015b0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15B0E 16092 bytes
SHA-256: 9d5144547e0b729630886a3ad3ce48e7da84b0115899dd9c2390406af6f0fecd
font_03_sfnt_off00017054.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17054 10556 bytes
SHA-256: f8598f4566d236ced9e91cb2fd5768d5b23afd1f0fbedab59572ac0177d09c7d

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