Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4d5572d1ea22f0e…

MALICIOUS

PDF

63.3 KB Created: 2021-02-11 21:19:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: dbc7a4716214607cef60736e26dc3390 SHA-1: 26900e3da195131fee71dec07b026cffb7515561 SHA-256: d4d5572d1ea22f0ef80f3b667be6ff9ede1b7f275c16336c4a75f04f5ca042f5
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains numerous embedded URLs, many of which point to disposable hosting and are part of a link farm, suggesting a phishing or malicious redirection attempt. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. The document body, though heavily obfuscated, contains keywords like 'mega iptv apk' which aligns with the lure of accessing potentially unwanted or malicious applications.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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://leonvi.ru/wix?keyword=mega+iptv+apk PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4467564/normal_5ffbb05b3bbd0.pdfIn PDF document text
    • http://lafukevita.22web.org/kundali_pro_filehippo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482617/normal_5ffc63ec7d738.pdfIn PDF document text
    • https://cdn.sqhk.co/guposidum/d6egc16/zawagibomeserurizema.pdfIn PDF document text
    • http://remaweg.22web.org/maniac_mansion_remastered.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415544/normal_5fe10a843d9e5.pdfIn PDF document text
    • http://divuwon.iblogger.org/free_editorial_design_templates.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450721/normal_5fcf743d082c7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488581/normal_5fd674ee58230.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/xaliwalufoguni/complication_de_l_infarctus_du_myocarde.pdfIn PDF document text
    • http://sojisij.epizy.com/business_card_template_word_blank.pdfIn PDF document text
    • http://pivomowofafo.rf.gd/gefubilukusojorafutojam.pdfIn PDF document text
    • https://s3.amazonaws.com/gowebabuxogiro/posepobejeretalujani.pdfIn PDF document text
    • http://zoxuditavuvov.rf.gd/namapobexupebiluwanu.pdfIn PDF document text
    • http://pesuvomekujidi.rf.gd/zuwato.pdfIn PDF document text
    • http://gigitepusiligo.epizy.com/tivizajevipaxejojaniku.pdfIn PDF document text
    • http://duliwijedij.rf.gd/cheppave_chirugali_song_ing_com.pdfIn PDF document text
    • http://vajubugi.epizy.com/feedback_form_template.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_off0000bd87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD87 4808 bytes
SHA-256: 902891de38359dc2f2e9f553b8170a153d3fdedd60accdbf65fd4c9ec52d7e77
font_01_sfnt_off0000ce16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE16 10064 bytes
SHA-256: 93d8ce3bb8639da4cd99ae016b72e7863daf8544eb3eb2f69904ae3bf2def50d

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