Malicious PDF — malware analysis report

Static analysis result for SHA-256 93a386528b688252…

MALICIOUS

PDF

73.3 KB Created: 2021-01-04 01:31:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: e14a9e4a1062cb8ddee06dd673af007e SHA-1: 57fc4b9117e6c1543c8d7bdb1ebca1b3f3ed94d4 SHA-256: 93a386528b6882525044889ec7bdc52758f7b8ac9080ac2028fbde0b3156c222
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with a critical heuristic identifying it as a link farm. One prominent URL, 'https://trafffe.ru/aws?utm_term=voucher+form+for+senior+high+school', is presented in the document body and is associated with a phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://trafffe.ru/aws?utm_term=voucher+form+for+senior+high+school PDF link annotation
    • https://cdn.sqhk.co/fifapupifig/Pieieyp/space_shuttle_simulator_free_online.pdfIn PDF document text
    • https://tezijiso.weebly.com/uploads/1/3/4/6/134690371/wedakexok-jerope-fomobex-gelalipade.pdfIn PDF document text
    • https://zoxuzula.weebly.com/uploads/1/3/4/4/134489613/4d7e7ef6c386a.pdfIn PDF document text
    • https://robonodibogiva.weebly.com/uploads/1/3/4/6/134630072/0398f9bfafc.pdfIn PDF document text
    • https://cdn.sqhk.co/nafadurip/esZgghb/cargo_pilot_jobs_alaska.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/dusubonifu/wakidoda.pdfIn PDF document text
    • https://s3.amazonaws.com/pexodugosa/asvab_study_guide_national_guard.pdfIn PDF document text
    • https://s3.amazonaws.com/jexijer/presentation_design_templates_free.pdfIn PDF document text
    • https://s3.amazonaws.com/vuforewebub/ebook_app_android_reddit.pdfIn PDF document text
    • https://s3.amazonaws.com/tizowodifi/emotional_and_behavioral_disorders_in_the_classroom.pdfIn PDF document text
    • https://s3.amazonaws.com/zikeko/tannery_wastewater_treatment.pdfIn PDF document text
    • https://s3.amazonaws.com/kimoweworape/zenoruzozezotiriwom.pdfIn PDF document text
    • https://s3.amazonaws.com/wizedumi/sejanizasafusego.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/vagelujufus.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxenipup/bogoroditse_devo_rachmaninoff_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/posufij/kelawubivorulumifi.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_off0000e29d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE29D 5052 bytes
SHA-256: 0a0b5a2e731be499ca46dc515a3a11998e092504b719da63b837b4068b7c3c52
font_01_sfnt_off0000f3b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3B0 10768 bytes
SHA-256: 23c8d1c9a78a942aa1ee0a92a4dd1bd38a36aa25252d6b4f77b64ee5d49f0bcd

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