Malicious PDF — malware analysis report

Static analysis result for SHA-256 57679f264f84d6a1…

MALICIOUS

PDF

80.0 KB Created: 2021-03-28 11:27:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 0e0786484d0159d8f2e9570e732d0ac9 SHA-1: 0a284e796307bf9df23230f24334c06f2e475073 SHA-256: 57679f264f84d6a1b34d93b4a2c62eac92b1802ff9421f2fe95ecfea99d1c0b9
186 Risk Score

Malware Insights

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

The PDF document is identified as malicious by multiple heuristics and a machine learning classifier, with ClamAV detecting it as Pdf.Phishing.Trojan. The document contains numerous external links, many pointing to disposable hosting, suggesting a link farm or phishing attempt. The presence of embedded JavaScript, though not fully detailed, indicates potential for malicious actions such as downloading further payloads or redirecting users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://mezovuduw.ru/123?utm_term=heathcote+secondary+school+ofsted+report PDF link annotation
    • http://marketitaly.info/73136904851kgml6.pdfIn PDF document text
    • http://magnifioco.site/sony_rx100_vi_ou_vii1papr.pdfIn PDF document text
    • https://rebolotor.weebly.com/uploads/1/3/4/3/134364816/zonunoferalavireka.pdfIn PDF document text
    • https://wibujiwegawej.weebly.com/uploads/1/3/4/8/134899761/5977757.pdfIn PDF document text
    • https://bejejedagaf.weebly.com/uploads/1/3/4/8/134862385/satezam.pdfIn PDF document text
    • http://cardio-active.site/accelerated_learning_techniques_for_students9m8dq.pdfIn PDF document text
    • https://tivifetanesa.weebly.com/uploads/1/3/5/3/135347176/3603632.pdfIn PDF document text
    • http://moreprodukti.com/pikojapuzuponerojilagntca.pdfIn PDF document text
    • https://fekalebewobazo.weebly.com/uploads/1/3/4/6/134668576/xulurubafave-voxup-degazikegebewik.pdfIn PDF document text
    • https://doliwejivus.weebly.com/uploads/1/3/4/3/134353379/fekogor_bexoranupawexot_lisototagitidi_regav.pdfIn PDF document text
    • https://gepidoduxaw.weebly.com/uploads/1/3/5/3/135324144/32a744e6fa78.pdfIn PDF document text
    • http://2220202.ru/jajukigihmpyg.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://0eaabcdb-938a-45a6-85a3-1a7d796bbcdd.filesusr.com/ugd/8d6d25_15950985fead46498f43e77c6dad0055.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/marimejerebo/cannery_row_chapter_6_summary.pdfIn PDF document text
    • https://627f215e-41ba-4aa4-9906-5f9f9d117739.filesusr.com/ugd/8ab72e_c519923a9260464cb90d69713e6ec844.pdf?index=trueIn PDF document text
    • https://91e55214-10ad-44cf-a10a-60a9392df58b.filesusr.com/ugd/e1c37d_089bb6a049954920a65d31aba178e529.pdf?index=trueIn PDF document text
    • https://3d6da986-5be3-4955-9d5c-e891e6c56a45.filesusr.com/ugd/3c671a_aefeca42eccb4946974bdc6f2854ffba.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/woxotopapozokev/0._2_full_movie_3gp.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fbd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBD9 5308 bytes
SHA-256: 018ce93ca76fc8da4f8629ef1d656ca23c4e906932029c6ce455c29789649325
font_01_sfnt_off00010de7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DE7 10836 bytes
SHA-256: 18c7d9a0b57340a831bdffcbf83f96c38dd97318dbaa4cc41e2c9754ba594138

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