Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e470222dad971b2…

MALICIOUS

PDF

95.3 KB Created: 2021-06-30 09:42:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: 2b6e4f3135e817a9e961da7af1ff36d4 SHA-1: 61e8b794a3aedbeed20a874266676f525acfaabe SHA-256: 0e470222dad971b2586cfe31409557631f806ebdb1c35d0c781bb7db432eadc7
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs pointing to various domains, many of which appear to be compromised WordPress sites or disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The presence of multiple external URIs and link farm heuristics suggests the document's primary purpose is to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9937

Heuristics 6

  • 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.
  • 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://nomylo.ru/uplcv?utm_term=parts+of+the+globe+theatre+labeled PDF link annotation
    • http://ccforum.kr/uploads/file/1624469301.pdfIn PDF document text
    • https://incoyun.com/calisma2/files/uploads/kixejepodotomanomopo.pdfIn PDF document text
    • http://abwfinlay.com/uploads/files/79829326280.pdfIn PDF document text
    • http://www.movingintofreedom.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab66019c236---daruzogatisubi.pdfIn PDF document text
    • http://www.gcsystem.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160804d6e579ff---jeribigoxajejuzuzefeno.pdfIn PDF document text
    • http://for-rent-leuven.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c853a7cdaf5---25160366013.pdfIn PDF document text
    • http://skiflogistics.ru/userfiles/file/varuranukosixudar.pdfIn PDF document text
    • https://foodphotoshop.com/userfiles/files/fejenegakevogajod.pdfIn PDF document text
    • http://www.marcado.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1608e4d9916b35---wijuweviwuronesin.pdfIn PDF document text
    • http://buildinggodskingdom.com/webcms/file/besidenekemidog.pdfIn PDF document text
    • https://nowackleverkusen.de/wp-content/plugins/formcraft/file-upload/server/content/files/16093ff6a49a72---ravovujobon.pdfIn PDF document text
    • http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/160763d6687b04---56793948417.pdfIn PDF document text
    • https://phase1acoustics.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093453ea226f---lirosalitulepifujapuwival.pdfIn PDF document text
    • http://ophtalmic-overnight.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16096a763e76d3---raxetonigur.pdfIn PDF document text
    • http://chiangmai-clean.com/user_img/files/77688138544.pdfIn PDF document text
    • http://designklasse.de/ckfinder/userfiles/files/53931803722.pdfIn PDF document text
    • http://thanhlamresort.vn/wp-content/plugins/formcraft/file-upload/server/content/files/160b9e4a234fce---wuxogawej.pdfIn PDF document text
    • http://uat.ideadunes.com/projects/ideadunes-portfolio-site/wp-content/plugins/formcraft/file-upload/server/content/files/16070f1963042c---35944310554.pdfIn PDF document text
    • https://digireg.se/upload/vugozukikisu.pdfIn PDF document text
    • https://k9-warrior.com/wp-content/plugins/super-forms/uploads/php/files/hu9h9p82dl29vodttk3151pv4a/jutid.pdfIn PDF document text
    • https://www.tanyadantus.com/wp-content/plugins/super-forms/uploads/php/files/b7be3531506a4260527261382c493d50/midagepefofageroba.pdfIn PDF document text
    • https://classconnbio.com/img-jacson/files/42346270560.pdfIn PDF document text
    • http://meechoktoolmart.com/user_img/files/43079038177.pdfIn PDF document text
    • http://www.nuricomuvakfi.org/wp-content/plugins/super-forms/uploads/php/files/l3lh14bg4d45no7ju215tpvre3/sajidaranozavipozafo.pdfIn PDF document text
    • http://plkorea77.com/ckupload/files/reminimeripajewewenivasip.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_off00010e9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E9B 18080 bytes
SHA-256: 3a8a258310eb270c657dea8aa29e92e60209f4ca0b0bfcb8def75390412892a0
font_01_sfnt_off00013e2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13E2B 10576 bytes
SHA-256: cd4940095079254f2bc72d18fa7781ba6070a3ab4f4b981113cac319493da6eb
font_02_sfnt_off00015641.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15641 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1