Malicious PDF — malware analysis report

Static analysis result for SHA-256 68297c2ec59dbef6…

MALICIOUS

PDF

88.3 KB Created: 2021-08-23 17:13:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 9292519ef403b34e4c28fe4b75272057 SHA-1: b49a0fbaedbdd2229c5307e01793fb258584af72 SHA-256: 68297c2ec59dbef6bce0d8006684ba04a147a6c945ff35c3aefc8b11c8b57276
96 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to compromised WordPress sites and are structured as link farms. The ML classifier strongly indicated maliciousness, and the overall structure suggests an attempt to redirect users to potentially harmful content or exploit vulnerabilities through these links. No scripts were extracted, limiting the analysis of direct execution vectors.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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://inlandautorepairmurrietaca.com/wp-content/plugins/super-forms/uploads/php/files/12e833ef71f17bef5133200ee91d04c4/koxunuxefasulojefasu.pdf In PDF document text
    • https://megatekspb.ru/sites/default/files/uploads/beresidevavebem.pdfIn PDF document text
    • http://chineseclothingonline.net/File/5555004389.pdfIn PDF document text
    • http://www.tif.cn/wp-content/plugins/super-forms/uploads/php/files/uebgkb4ddrjfql48uuh2uu19kh/lamam.pdfIn PDF document text
    • http://www.aportecnica.com/imagenes/editor/file/kuzadutimiv.pdfIn PDF document text
    • https://hafa-verein.de/wp-content/plugins/super-forms/uploads/php/files/19d6ba4408aa05f85711d126d21eb6ac/jebogamorobenele.pdfIn PDF document text
    • http://corporatiegids.nl/uploads/files/kufenetavekiti.pdfIn PDF document text
    • http://www.yourhealthyourchoice.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a70312a1f04---mobapobef.pdfIn PDF document text
    • https://kachhiproperties.com/wp-content/plugins/super-forms/uploads/php/files/rh0tqfhv9grqj826fnn15sflv6/daneferepawukobimukemog.pdfIn PDF document text
    • https://lightspec.ca/wp-content/plugins/super-forms/uploads/php/files/dfc6761296642366c1d40f83a5fb4036/82536739433.pdfIn PDF document text
    • http://cwesp.biz/upload/file/86310386786.pdfIn PDF document text
    • http://orvositudasbazis.eu/images/upload/file/begurupivunokif.pdfIn PDF document text
    • https://amadesafar.ir/basefile/amadesafarir/files/bakufegolamodid.pdfIn PDF document text
    • http://elenasteele.com/wp-content/plugins/formcraft/file-upload/server/content/files/160adef06bcde4---84283430994.pdfIn PDF document text
    • http://hsiwww.com/image/files/20210802_171530.pdfIn PDF document text
    • https://www.ideaklinikankara.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082b4a4b8016---difubuwikevoxefawuxikan.pdfIn PDF document text
    • http://www.ebsjosepirosamaria.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078b800b4e01---zidijipogobiwasigasuradal.pdfIn PDF document text
    • http://www.webtony.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c3a97daccde---93639933382.pdfIn PDF document text
    • http://fantasypartyentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081cb0a3a8cf---ninuvatexuka.pdfIn PDF document text
    • https://readxyz.org/wp-content/plugins/super-forms/uploads/php/files/601dd1568c1456164fa2fea17f5aa5b9/xisarokun.pdfIn PDF document text
    • http://sofia-es.tokyo/yamituki-n/uploads/files/julikuxitanuviwatotamofak.pdfIn PDF document text
    • https://aannemingsbedrijfbarthulsbosch.nl/userfiles/file/vumodijibaje.pdfIn PDF document text
    • https://alajuusa.ee/media/contents/file/28685931416.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=ccw+test+questions+and+answersPDF 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f39a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF39A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010bac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BAC 17592 bytes
SHA-256: 146076532813dcf2e5c9750d6eca65530895c73c31c05885ea8323bf17e3e64b
font_02_sfnt_off000139e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x139E7 10680 bytes
SHA-256: aba6ab6541b49c1e77f54e1f5dcbdd7638209718aa95cfb81e385ea2085f88ad

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