Malicious PDF — malware analysis report

Static analysis result for SHA-256 0eebf04508d92290…

MALICIOUS

PDF

75.5 KB Created: 2021-04-04 19:09:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 00364f8575b8d9aff006b210e70d567e SHA-1: 5bbd3226f8e20fc1378ff1065dc4637f7d8fb114 SHA-256: 0eebf04508d92290c04541a4932f343394e2c75b1e569458ace7c5769812613e
184 Risk Score

Malware Insights

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

This PDF file contains multiple embedded links, with at least one identified as a malicious redirector. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the presence of malicious links suggests an attempt to redirect the user to a compromised or malicious site.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://dafemum.ru/aws?utm_term=d%2526d+monster+manual+all+monsters In PDF document text
    • https://cdn-cms.f-static.net/uploads/4446773/normal_604ddcf1750ef.pdfIn PDF document text
    • http://taxutipepavij.iblogger.org/49013559218.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468274/normal_6061a46a1ccdc.pdfIn PDF document text
    • http://siteznakomstv69.space/api_documentation_template_mdfmdcu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444351/normal_5fe518a015ed4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476146/normal_6005d5f23f482.pdfIn PDF document text
    • http://tevfikyuce.xyz/android_one_phones_under_15k9e1b6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373986/normal_6058b5447ce5e.pdfIn PDF document text
    • http://everydayy.fun/cub_cadet_ltx_1042_kw_parts_manualfmkui.pdfIn PDF document text
    • http://biomanua.website/60867630427kwlf4.pdfIn PDF document text
    • http://medyayazilimtr.com/15744086049nlwhw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/705e2cd0-9e5f-4172-b006-2591241a6ef7/88775948702.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b2b73205-c9f1-4d3c-9074-427989797b40/48010245940.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9afc53f-4a2d-482c-814a-635cbbfdfbcf/behavioral_neuroscience_8th_edition.pdfIn PDF document text
    • http://gojejamajutemus.epizy.com/bitstream_font_navigator_64-_bit.pdfIn PDF document text
    • http://risogida.rf.gd/remojuxutejagesexim.pdfIn PDF document text
    • http://fezovinu.epizy.com/major_features_of_government_of_india_act_1935.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c44d1a8f-fd8f-421b-8357-658b46c342c7/best_solution_is_the_simplest.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a1e71c52-e636-472a-b04e-519effb783af/what_does_the_class_president_do.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb4efd9e-af30-4b3b-a1f8-9ab6a6643ca2/pimubozesevefonugasut.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_off0000ef27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF27 4156 bytes
SHA-256: e28c3d75b71adbbf3e3f51f1fa20b85ae8a239f1e87d766e9236934b86ab0752
font_01_sfnt_off0000fd55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD55 10612 bytes
SHA-256: a2d783d561bd198dd0238e8d3af51842c44451b1b38a055488bbb28a364c1e1b

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