Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3001e1bc33530eb…

MALICIOUS

PDF

85.7 KB Created: 2021-03-15 17:26:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 43e9676cfa93f313fa0a4bdb93a4da6f SHA-1: 5400af1efbab85fdf69d8ec5175ba9c9dbce5f45 SHA-256: c3001e1bc33530ebb1edde7602bdf336fd949a406e6ac64c622e50fdab303756
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a large number of external links, many of which are SEO-themed and point to potentially malicious domains. The primary URL, 'https://xezojetit.ru/wix?keyword=alchemist+desynthesis+guide+ffxiv', suggests a lure to a website that likely hosts malicious content or phishing pages. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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://xezojetit.ru/wix?keyword=alchemist+desynthesis+guide+ffxiv PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4381105/normal_6046f3dce9ad3.pdfIn PDF document text
    • http://fekevopimibun.sportsontheweb.net/educational_employees_credit_union_wire_routing_number.pdfIn PDF document text
    • http://muwiduvepobuz.mygamesonline.org/glencoe_advanced_mathematical_concepts_precalculus_with_applications_answers.pdfIn PDF document text
    • https://fukusegoboviv.weebly.com/uploads/1/3/1/8/131856281/3abeef572e712.pdfIn PDF document text
    • https://todoxaladavefuk.weebly.com/uploads/1/3/4/5/134529573/xajudiz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426418/normal_6047ed26722b3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372753/normal_6046461d6214d.pdfIn PDF document text
    • https://cdn.sqhk.co/dutudovajud/WcL72ia/remulugolufofotusile.pdfIn PDF document text
    • https://cdn.sqhk.co/noradinez/ijeBje3/alone_sad_girl_images_hd.pdfIn PDF document text
    • https://cdn.sqhk.co/soxuvezosapa/huZhije/cute_wallpapers_kawaii_app.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/veraxawewib/organizational_chart_template_free_ppt.pdfIn PDF document text
    • https://s3.amazonaws.com/legipalofi/management_consultant_cv_templates.pdfIn PDF document text
    • http://palakojum.rf.gd/2861703312.pdfIn PDF document text
    • http://livewimujekofo.rf.gd/64263976507.pdfIn PDF document text
    • http://josetevuj.epizy.com/dovufavukizeruruson.pdfIn PDF document text
    • https://s3.amazonaws.com/rimejiguvif/ms_project_online_training.pdfIn PDF document text
    • https://s3.amazonaws.com/tokatefozude/15264908582.pdfIn PDF document text
    • http://punotonaduwize.atwebpages.com/bu_jhansi_exam_date_2020_download.pdfIn PDF document text
    • https://s3.amazonaws.com/zisulamisozoto/basecamp_windows_xp.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_off00010ff5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FF5 5348 bytes
SHA-256: e78e4f1e71006402b30b4a6882714ba4db1643d6013722be169e677fbf159d1b
font_01_sfnt_off0001221f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1221F 11196 bytes
SHA-256: 979fce3f952678b16d580ff3a29b86cf0ab7f2050c09c47cf4cc4fe27e9c94f1

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