Malicious PDF — malware analysis report

Static analysis result for SHA-256 34f5450856d9aafa…

MALICIOUS

PDF

76.0 KB Created: 2021-06-12 19:15:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 9a7c5f70803045c4398068979b3e1f09 SHA-1: b04b4fefdcc0f5a5dd0c115de175a01d722eb07d SHA-256: 34f5450856d9aafa6961633caaf8b8493258f50e6cb23b039c38988655900ee2
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains a large number of embedded URLs, many of which point to compromised WordPress sites. The 'ML_NYX_PDF_MALICIOUS' and 'CLAMAV_DETECTION' heuristics indicate a high likelihood of malicious intent. The presence of URLs like 'https://wastran.ru/uplcv?utm_term=watch+frozen+ii+online+free' suggests a phishing lure, possibly disguised as free content to entice clicks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://wastran.ru/uplcv?utm_term=watch+frozen+ii+online+free PDF link annotation
    • https://thriveelearning.com/wp-content/plugins/super-forms/uploads/php/files/9129aeb510d1b00b441d5f94285e9b1b/64607357610.pdfIn PDF document text
    • https://www.siemers-deutschmann.de/wp-content/plugins/super-forms/uploads/php/files/ru97u0cm01hfc7d96fsfi7amr5/44394870530.pdfIn PDF document text
    • http://homenet-spb.ru/userfiles/file/55995148569.pdfIn PDF document text
    • http://anhuizhkj.com/upload_fck/file/2021-5-5/20210505153445239408.pdfIn PDF document text
    • https://www.tessilgiada.it/wp-content/plugins/formcraft/file-upload/server/content/files/1608f288495036---86370101825.pdfIn PDF document text
    • https://unitedcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160771eb8e1685---59131752305.pdfIn PDF document text
    • http://argentum.com/wp-content/plugins/super-forms/uploads/php/files/347fen1npgi2m3h6rpvdfctnbj/towojasojejat.pdfIn PDF document text
    • http://cbelmira.com/wp-content/plugins/super-forms/uploads/php/files/cc4hujkja9qkc8368isfje27e5/vafikekexu.pdfIn PDF document text
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/16071a09b398d2---39944349261.pdfIn PDF document text
    • https://mediabandit.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c2b59e9edc---kejutarawemele.pdfIn PDF document text
    • https://cald-lighting.com/wp-content/plugins/super-forms/uploads/php/files/1783cfbbe11b383372ca8080bd931800/69736680746.pdfIn PDF document text
    • http://oneself.pro/wp-content/plugins/formcraft/file-upload/server/content/files/1606d5fa567819---36601345402.pdfIn PDF document text
    • https://www.financedeclined.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16079ca5f10073---fefatulidijanunafajiga.pdfIn PDF document text
    • https://singaporenotarypublic.com/wp-content/plugins/super-forms/uploads/php/files/ba6319c654ae29fdc00a28d75f08e7d6/36481353644.pdfIn PDF document text
    • https://tigercabinetry.com/wp-content/plugins/super-forms/uploads/php/files/b0c99c6357b252c0c0129f06a07cf884/jegipetigekupubu.pdfIn PDF document text
    • https://thriveelearning.com/wp-content/plugins/super-forms/uploads/php/files/05d3f38817beee169914f7bf6a2c3e28/diveseviluworakaleniguba.pdfIn PDF document text
    • https://monarchwinemerchants.com/wp-content/plugins/super-forms/uploads/php/files/b0c7cc0caa605d5ff6c75a80c3d9655e/18841884387.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB7E 4852 bytes
SHA-256: 5314422aac2b64cb4fae35c29d59a411cf6e8949e3e6654f53bf5861edceb283
font_01_sfnt_off0000fc13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC13 11496 bytes
SHA-256: 510dc35fade2f2b5001e27336c8f433f161ec4cc7b7bbc9454b1e39aebd59d65

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