Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c736ee7bced8601…

MALICIOUS

PDF

87.4 KB Created: 2021-06-29 03:33:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 690f1c36610497dcc31ea9316d306fc7 SHA-1: be3e250f152cc763070880a23f4a2826f4040fcc SHA-256: 1c736ee7bced860168ed2364fcb9deef23144520cf8579df885c2f7b641b14c5
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF contains embedded JavaScript, which is often used to redirect users to malicious websites. The heuristics indicate the document functions as a link farm, pointing to numerous distinct hosts, many of which are hosted on compromised CMS upload storage. This suggests an attempt to distribute phishing content or malware through a network of deceptive links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9835

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.
  • 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 http://alwaysfavorentertainment.com/clients/879371/File/93617328900.pdf In PDF document text
    • https://formapolis.it/wp-content/plugins/super-forms/uploads/php/files/9894a77b9f72b42a7ea1c06b75aee960/lapoputamuf.pdfIn PDF document text
    • http://www.mywil.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160722d5a5cc36---18999328436.pdfIn PDF document text
    • http://www.empresasdelimpeza.info/wp-content/plugins/formcraft/file-upload/server/content/files/160a2219cdec06---18177717786.pdfIn PDF document text
    • http://zerosquareonline.com/file/dogawisidopudijotovi.pdfIn PDF document text
    • https://www.prestigeautobody.com.au/wp-content/plugins/super-forms/uploads/php/files/e66a83c6ee7df1baa9d9b54976804807/19464689981.pdfIn PDF document text
    • https://www.golddustdental.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b4364f45513---96522870215.pdfIn PDF document text
    • http://straps.by/ckfinder/userfiles/files/gatafuxorakabuvigajip.pdfIn PDF document text
    • http://www.saraviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092bd83a911a---26261564128.pdfIn PDF document text
    • https://www.hotwaterfactory.com.au/wp-content/plugins/super-forms/uploads/php/files/777996fc2ee7314313b3c6787a781e43/4258175615.pdfIn PDF document text
    • http://ar-intl.net/wp-content/plugins/super-forms/uploads/php/files/crv2v28tg2s8daoq67i69o5qg2/remafivovovadutenofo.pdfIn PDF document text
    • http://argra.rs/wp-content/plugins/formcraft/file-upload/server/content/files/160909b2148bd9---59919638069.pdfIn PDF document text
    • https://www.marthatrotts.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160bf87c8122a5---41564021865.pdfIn PDF document text
    • https://www.penyembuhanholistikreiki.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082ec0547b20---22163387255.pdfIn PDF document text
    • https://macleanpinesdrivingschool.com.au/wp-content/plugins/super-forms/uploads/php/files/46b5abe5a5f9d3e535544c48d59b0ee1/55958295069.pdfIn PDF document text
    • http://bora.su/ckfinder/userfiles/files/pulisukekidu.pdfIn PDF document text
    • https://avigailpekelman.com/sites/default/files/file/29649166401.pdfIn PDF document text
    • http://brilspa.ro/userfiles/file///47818233778.pdfIn PDF document text
    • http://conservativista.com/js/ckfinder/userfiles/files/22242771753.pdfIn PDF document text
    • http://t-p-fortune.com/userfiles/file/xexifunade.pdfIn PDF document text
    • http://www.zywawiara.pl/pliki/63604602237.pdfIn PDF document text
    • https://webmodeli.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b5482d5004---vojogituxujareru.pdfIn PDF document text
    • http://ajtoablakcentrum.com/_user/file/guxolafirosom.pdfIn PDF document text
    • https://accounting789.com/ThImg/file/6683444291.pdfIn PDF document text
    • http://asbazainville.org/userfiles/file/44512956866.pdfIn PDF document text
    • https://twr1115.net/files/fckeditor/file/kigugik.pdfIn PDF document text
    • https://prsnashville.com/wp-content/plugins/super-forms/uploads/php/files/e61eaf4f04af6163fffebaac95913ad6/tipisemobemajudamibit.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=motivational+quotes+for+love+lifePDF 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_off0000f1e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1E0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000109f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109F7 10512 bytes
SHA-256: 6f4ab6e49bb76814b6cd9226f22a77f855f1016a9a25dadf11ea209d15b7b999
font_02_sfnt_off0001221b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1221B 17068 bytes
SHA-256: 340b8fb60e317fd83789ced75e30519de57972ece23e55d8b3e96b1e672af83f

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