Malicious PDF — malware analysis report

Static analysis result for SHA-256 95549d4033246fff…

MALICIOUS

PDF

79.1 KB Created: 2021-05-12 08:26:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: ce1bef00a9c6703856309fe718ba149c SHA-1: 553378f88d0c0e976bb2401ad0ee1003d6d64503 SHA-256: 95549d4033246fff1e7aec7963d18fba3dace21cda5222b9928b9f431c04a5e4
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous external links, with one prominent URL pointing to a suspicious domain ('soxebez.ru') that is likely used for phishing or malware distribution. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting an attempt to manipulate search engine results or redirect users to malicious content. ClamAV detection and ML classification strongly indicate malicious intent, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://soxebez.ru/strik?utm_term=realtek+hd+audio+manager+windows+7+headphones+not+working PDF link annotation
    • http://playmarket-online.com/purple_butterfly_images_freeu888j.pdfIn PDF document text
    • http://cashfree.store/how_to_reset_drum_on_brother_printer9x3lw.pdfIn PDF document text
    • https://cdn.sqhk.co/ligumorik/ghhhejc/sogutudafinexir.pdfIn PDF document text
    • http://carinsusa.info/spectrum_math_workbook_grade_8_free92cvz.pdfIn PDF document text
    • https://cdn.sqhk.co/kamupudoro/hgifhgf/palidajijusise.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374533/normal_6024c33b842a1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459326/normal_6056b7026ffe4.pdfIn PDF document text
    • http://svoytrylend.xyz/black_desert_mobile_korea_tier_list_2020ukp9w.pdfIn PDF document text
    • http://verifedform.com/carly_for_bmw_full_version_apk2f846.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403282/normal_6031387886bca.pdfIn PDF document text
    • https://cdn.sqhk.co/kafekata/puicjgS/food_wars_season_2_ep_13.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/wibedubosateg/xalopifiligatepukugepike.pdfIn PDF document text
    • https://s3.amazonaws.com/buganabowumujef/beginners_guide_to_excel_functions.pdfIn PDF document text
    • https://54e283d8-6946-47af-b6e3-c78582312647.filesusr.com/ugd/22cd47_1f201e2611bd4c2691616ac20bd0bb05.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zetubakuz/8494485231.pdfIn PDF document text
    • https://0b21792c-a699-4cf4-8833-5910c6ad58af.filesusr.com/ugd/b0b521_e48eef61e9c84d8f88534560a4e08588.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bejexe/dbt_coping_skills_activities.pdfIn PDF document text
    • https://s3.amazonaws.com/zijivevip/god_guide_me_images.pdfIn PDF document text
    • https://6bfd3344-23d3-4e03-ab7d-00c1c23eecf6.filesusr.com/ugd/be19e1_c608397ddba7428da820ea8f208ca757.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bulalowisu/vezenivuti.pdfIn PDF document text
    • https://s3.amazonaws.com/nemafu/basic_econometrics_gujarati.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f671.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF671 5616 bytes
SHA-256: 0b0c8dafb1ceb6aa570fb91dd44834dc3436c8ad741cb7c95d7f875f545b8d58
font_01_sfnt_off0001098b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1098B 10884 bytes
SHA-256: f8d3c88992c35f39d78023ce92b8466a64eae2c8f8d10e2993003d706fa5e5dd

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